Classification by p-group

2025-09-09T11:50:13Z

Pete Gautam: /* Blocks for p=2 */

'''Classification of Morita equivalences for blocks with a given defect group'''

On this page we list classifications of Morita equivalence classes for each isomorphism class of p-groups in turn. [[Generic classifications by p-group class|Generic classifications for classes of p-groups can be found here]].

See [[Labelling for Morita equivalence classes|this page]] for a description of the labelling conventions.

== Blocks for <math> p=2 </math> ==

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>1 \leq |D| \leq 8</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
| 1 || 1 || <math>1</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
| 2 || [[C2|1]] || [[C2|<math>C_2</math>]] || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
| 4 || [[C4|1]] || [[C4|<math>C_4</math>]] || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
| 4 || [[C2xC2|2]] || [[C2xC2|<math>C_2 \times C_2</math>]] || 3(3) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[Er82], [Li94] ]] ||
|-
|8 || [[C8|1]] || [[C8|<math>C_8</math>]] ||1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|8 || [[C4xC2|2]] || [[C4xC2|<math>C_4 \times C_2</math>]] ||1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|8 || [[D8|3]] || [[D8|<math>D_8</math>]] ||6(?) || <math>k</math> || <math>k</math> || [[References|[Er87] ]] || Principal blocks classified up to source algebra equivalence in [[References#K|[KoLa20]]]
|-
|8 || [[Q8|4]] || [[Q8|<math>Q_8</math>]] ||3(3) || <math>\mathcal{O}</math> || <math>k</math> || [[References|[Er88a], [Er88b], [HKL07], [Ei16]]] ||
|-
|8 || [[C2xC2xC2|5]] || [[C2xC2xC2|<math>C_2 \times C_2 \times C_2</math>]] || 8(8) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References| [Ea16]]] || Uses CFSG
|}

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>|D|=16</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Donovan (w.r.t)?
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
|16 || [[C16|1]] || [[C16|<math>C_{16}</math>]] || <math>\mathcal{O}</math> ||1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|16 || [[C4xC4|2]] || [[C4xC4|<math>C_4 \times C_4</math>]] || <math>\mathcal{O}</math> || 2(2) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[EKKS14] ]] ||
|-
|16 || [[MNA(2,1)|3]] || [[MNA(2,1)]] || No || 3(?) || No || || [[References|[Sa11] ]] || Block invariants known
|-
|16 || [[C4:C4|4]] || [[C4:C4|<math>C_4:C_4</math>]] || <math>\mathcal{O}</math>|| 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[CG12], [Sa12b]]] ||
|-
|16 || [[C8xC2|5]] || [[C8xC2|<math>C_8 \times C_2</math>]]|| <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|16 || [[M16|6]] || [[M16|<math>M_{16}</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[CG12], [Sa12b] ]] ||
|-
|16 || [[D16|7]] || [[D16|<math>D_{16}</math>]] || <math>k</math>|| 5(?) || <math>k</math> || <math>k</math> || [[References|[Er87]]] || Principal blocks classified up to source algebra equivalence in [[References#K|[KoLa20]]]
|-
|16 || [[SD16|8]] || [[SD16|<math>SD_{16}</math>]] || <math>k</math> || 7(?) || || || [[References|[Er88c], [Er90b]]] || Two other possible classes
|-
|16 || [[Q16|9]] || [[Q16|<math>Q_{16}</math>]] || No || 6(?) || || <math>k</math> || [[References|[Er88a], [Er88b], [Ho97]]] || Two possibly infinite families when <math>l(B)=2</math>. Classified over <math>\mathcal{O}</math> when <math>l(B)=3</math> in [[References#E|[Ei16]]]. Principal blocks classified up to source algebra equivalence in [[References#K|[KoLa20b]]]
|-
|16 || [[C4xC2xC2|10]] || [[C4xC2xC2|<math>C_4 \times C_2 \times C_2</math>]]|| <math>\mathcal{O}</math> || 3(3) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[EL18a]]] ||
|-
|16 || [[D8xC2|11]] || [[D8xC2|<math>D_8 \times C_2</math>]] || No || || || || [[References|[Sa12] ]] || Block invariants known
|-
|16 || [[Q8xC2|12]] || [[Q8xC2|<math>Q_8 \times C_2</math>]] || <math>\mathcal{O}</math> || 3(3) || No || || [[References#E|[EL20]]] || Block invariants known by [[References#S|[Sa13]]]
|-
|16 || [[D8*C4|13]] || [[D8*C4|<math>D_8*C_4</math>]] || No || 3(?) || No || || [[References|[Sa13b] ]] || Block invariants known
|-
|16 || [[(C2)^4|14]] || [[(C2)^4|<math>(C_2)^4</math>]] || <math>\mathcal{O}</math> || 16(16) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References|[Ea18] ]] ||
|}

The table for defect groups of order 32 takes as its starting point Table 13.1 of Sambale's book [[References|[Sa14]]].

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>|D|=32</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Donovan (w.r.t)?
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
|32 || [[C32|1]] || [[C32|<math>C_{32}</math>]] || <math>\mathcal{O}</math> ||1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|32 || [[MNA(2,2)|2]] || [[MNA(2,2)|<math>MNA(2,2)</math>]] || <math>\mathcal{O}</math> || 2(2) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#E|[EKS12]]] ||
|-
|32 || [[C8xC4|3]] || [[C8xC4|<math>C_8 \times C_4</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|32 || [[C8:C4|4]] || [[C8:C4|<math>C_8:C_4</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[MNA(3,1)|5]] || [[MNA(3,1)|<math>MNA(3,1)</math>]] || No || || || || [[References#S|[Sa11] ]] || Invariants known
|-
|32 || [[MNA(2,1):C2|6]] || [[MNA(3,1):C2|<math>MNA(2,1):C_2</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[SmallGroup(32,7)|7]] || [[SmallGroup(32,7)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] || <math>M_{16}:C_2</math>
|-
|32 || [[2.MNA(2,1)|8]] || [[2.MNA(2,1)|<math>2.MNA(2,1)</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[D8:C4|9]] || [[D8:C4|<math>D_8:C_4</math>]] || No || || || || [[References#S|[Sa14,10.23]]] || Invariants known
|-
|32 || [[Q8:C4|10]] || [[Q8:C4|<math>Q_8:C_4</math>]] || No || || || || [[References#S|[Sa14,10.25]]] || Invariants known
|-
|32 || [[C4wrC2|11]] || [[C4wrC2|<math>C_4 \wr C_2</math>]] || No || 6(6) || No || || [[References#K|[Ku80]]], [[References#K|[KoLaSa23]]] || Invariants known. Principal blocks classified up to source algebra equivalence in [[References#K|[KoLaSa23]]]
|-
|32 || [[C4:C8|12]] || [[C4:C8|<math>C_4:C_8</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[C8:C4a|13]] || [[C8:C4a|<math>C_8:C_4=\langle a,b|a^8=b^4=1, ba=a^3b \rangle</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[C8:C4b|14]] || [[C8:C4b|<math>C_8:C_4=\langle a,b|a^8=b^4=1, ba=a^7b \rangle</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[SmallGroup(32,15)|15]] || [[SmallGroup(32,15)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[C16xC2|16]] || [[C16xC2|<math>C_{16} \times C_2</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|32 || [[M32|17]] || [[M32|<math>M_{32}</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#C|[CG12], [Sa12b]]] ||
|-
|32 || [[D32|18]] || [[D32|<math>D_{32}</math>]] || <math>k</math> || 5(?) || <math>k</math> || <math>k</math> || [[References#E|[Er87]]] || Principal blocks classified up to source algebra equivalence in [[References#K|[KoLa20]]]
|-
|32 || [[SD32|19]] || [[SD32|<math>SD_{32}</math>]] || <math>k</math> || || || || ||
|-
|32 || [[Q32|20]] || [[Q32|<math>Q_{32}</math>]] || No || || || || [[References#E|[Er88a], [Er88b], [Ho97]]] || Two possibly infinite families when <math>l(B)=2</math>. Classified over <math>\mathcal{O}</math> when <math>l(B)=3</math> in [[References#E|[Ei16]]]. Principal blocks classified up to source algebra equivalence in [[References#K|[KoLa20b]]]
|-
|32 || [[C4xC4xC2|21]] || [[C4xC4xC2|<math>C_4 \times C_4 \times C_2</math>]] || <math>\mathcal{O}</math> || 2(2) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#E|[EKKS14]]]
|-
|32 || [[MNA(2,1)xC2|22]] || [[MNA(2,1)xC2|<math>MNA(2,1) \times C_2</math>]] || No || || || || [[References#S|[Sa14,10.25]]] || Invariants known
|-
|32 || [[(C4:C4)xC2|23]] || [[(C4:C4)xC2|<math>(C_4:C_4) \times C_2</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[SmallGroup(32,24)|24]] || [[SmallGroup(32,24)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[D8xC4|25]] || [[D8xC4|<math>D_8 \times C_4</math>]] || No || || || || [[References#S|[Sa14,9.7]]] ||
Invariants known
|-
|32 || [[Q8xC4|26]] || [[Q8xC4|<math>Q_8 \times C_4</math>]] || <math>\mathcal{O}</math> || 3(3) || No || || [[References#E|[EL20]]] || Invariants known by [[References#S|[Sa14,9.28]]]
|-
|32 || [[SmallGroup(32,27)|27]] || [[SmallGroup(32,27)]] || No || || || || ||
|-
|32 || [[SmallGroup(32,28)|28]] || [[SmallGroup(32,28)]] || No || || || || [[References#S|[Sa14,13.11]]] || Invariants known
|-
|32 || [[SmallGroup(32,29)|29]] || [[SmallGroup(32,29)]] || No || || || || [[References#S|[Sa14,13.11]]] || Invariants known
|-
|32 || [[SmallGroup(32,30)|30]] || [[SmallGroup(32,30)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[SmallGroup(32,31)|31]] || [[SmallGroup(32,31)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[SmallGroup(32,32)|32]] || [[SmallGroup(32,32)]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[SmallGroup(32,33)|33]] || [[SmallGroup(32,33)]] || No || || || || [[References|[Sa14,13.12]]] || Invariants partly known
|-
|32 || [[SmallGroup(32,34)|34]] || [[SmallGroup(32,34)]] || No || || || || [[References|[Sa14,13.12]]] || Invariants partly known
|-
|32 || [[C4:Q8|35]] || [[C4:Q8|<math>C_4:Q_8</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[C8xC2xC2|36]] || [[C8xC2xC2|<math>C_8 \times C_2 \times C_2</math>]] || <math>\mathcal{O}</math> || 3(3) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#E|[EL18a]]] ||
|-
|32 || [[M16xC2|37]] || [[M16xC2|<math>M_{16} \times C_2</math>]] || <math>\mathcal{O}</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#S|[Sa14]]] ||
|-
|32 || [[D8*C8|38]] || [[D8*C8|<math>D_8*C_8</math>]] || No || || || || [[References#S|[Sa14,9.18]]] || Invariants known
|-
|32 || [[D16xC2|39]] || [[D16xC2|<math>D_{16} \times C_2</math>]] || No || || || || [[References#S|[Sa14,9.7]]] || Invariants known
|-
|32 || [[SD16xC2|40]] || [[SD16xC2|<math>SD_{16} \times C_2</math>]] || No || || || || [[References#S|[Sa14,9.37]]] || Invariants known
|-
|32 || [[Q16xC2|41]] || [[Q16xC2|<math>Q_{16} \times C_2</math>]] || No || || || || [[References#S|[Sa14,9.28]]] || Invariants known
|-
|32 || [[D16*C4|42]] || [[D16*C4|<math>D_{16}*C_4</math>]] || No || || || || [[References|[Sa14,9.18]]] || Invariants known
|-
|32 || [[SmallGroup(32,43)|43]] || [[SmallGroup(32,43)]] || No || || || || ||
|-
|32 || [[SmallGroup(32,44)|44]] || [[SmallGroup(32,44)]] || No || || || || ||
|-
|32 || [[C4xC2xC2xC2|45]] || [[C4xC2xC2xC2|<math>C_4 \times C_2 \times C_2 \times C_2</math>]] || <math>\mathcal{O}</math> || 8(8) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || [[References#E|[EL23]]] ||
|-
|32 || [[D8xC2xC2|46]] || [[D8xC2xC2|<math>D_8 \times C_2 \times C_2</math>]] || No || || || || ||
|-
|32 || [[Q8xC2xC2|47]] || [[Q8xC2xC2|<math>Q_8 \times C_2 \times C_2</math>]] || No || || || || ||
|-
|32 || [[D8*C4xC2|48]] || [[D8*C4xC2|<math>(D_8*C_4) \times C_2</math>]] || No || || || || ||
|-
|32 || [[D8*D8|49]] || [[D8*D8|<math>D_8*D_8</math>]] || No || || || || [[References#S|[Sa13c]]] || Invariants partly known
|-
|32 || [[D8*Q8|50]] || [[D8*Q8|<math>D_8*Q_8</math>]] || No || || || || [[References#S|[Sa13c]]] || Invariants partly known
|-
|32 || [[(C2)^5|51]] || [[(C2)^5|<math>(C_2)^5</math>]] || <math>\mathcal{O}</math> || 34 (34) || <math>\mathcal{O}</math> || || [[References#A|[Ar19]]] || Derived eq. classes determined for 30 of the 34 Morita eq. classes.
|}



==Blocks for <math>p=3</math>==

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>1 \leq |D| \leq 27</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
| 1 || 1 || <math>1</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
| 3 || [[C3|1]] || [[C3|<math>C_3</math>]] || 2(2) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|9 || [[C9|1]] ||[[C9|<math>C_9</math>]] || 3(3) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|9 || [[C3xC3|2]] || [[C3xC3|<math>C_3 \times C_3</math>]] || || || || ||
|-
|27 || [[C27|1]] || [[C27|<math>C_{27}</math>]] || 3(3) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|27 || [[C9xC3|2]] || [[C9xC3|<math>C_9 \times C_3</math>]] || || || || ||
|-
|27 || [[3_+^3|3]] || [[3_+^3|<math>3_+^{1+2}</math>]] || || || || ||
|-
|27 || [[3_-^3|4]] || [[3_-^3|<math>3_-^{1+2}</math>]] || || || || ||
|-
|27 || [[C3xC3xC3|5]] || [[C3xC3xC3|<math>C_3 \times C_3 \times C_3</math>]] || || || || ||
|}

==Blocks for <math>p=5</math>==

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>5 \leq |D| \leq 125</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
| 1 || 1 || <math>1</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|5 || [[C5|1]] || [[C5|<math>C_5</math>]] ||6(6) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|25 || [[C25|1]] ||[[C25|<math>C_{25}</math>]] || 6(6) || No || <math>\mathcal{O}</math> || || Max 12 classes
|-
|25 || [[C5xC5|2]] || [[C5xC5|<math>C_5 \times C_5</math>]] || || || || ||
|-
|125 || [[C125|1]] ||[[C125|<math>C_{125}</math>]] || || || || ||
|-
|125 || [[C25xC5|2]] || [[C25xC5|<math>C_{25} \times C_5</math>]] || || || || ||
|-
|125 || [[5_+^3|3]] || [[5_+^3|<math>5_+^{1+2}</math>]] || 62(62) || <math>\mathcal{O}</math> || || [[References#A|[AE23]]] || Inertial quotients are consistent within classes
|-
|125 || [[5_-^3|4]] || [[5_-^3|<math>5_-^{1+2}</math>]] || || || || ||
|-
|125 || [[C5xC5xC5|5]] || [[C5xC5xC5|<math>C_5 \times C_5 \times C_5</math>]] || || || || ||
|}

==Blocks for <math>p\geq 7</math>==

{| role="presentation" class="wikitable mw-collapsible mw-collapsed"
| <math>|D|</math>  
|-
! scope="col"| <math>|D|</math>
! scope="col"| SmallGroup
! scope="col"| Isotype
! scope="col"| Known <math>k</math>-(<math>\mathcal{O}</math>-)classes
! scope="col"| Complete (w.r.t.)?
! scope="col"| Derived equiv classes (w.r.t)?
! scope="col"| References
! scope="col"| Notes
|-
| 1 || 1 || <math>1</math> || 1(1) || <math>\mathcal{O}</math> || <math>\mathcal{O}</math> || ||
|-
|7 || [[C7|1]] || [[C7|<math>C_7</math>]] ||14(14) ||No || <math>\mathcal{O}</math> || ||Max 21 classes
|-
|11|| [[C11|1]] || [[C11|<math>C_{11}</math>]] || ||No || <math>\mathcal{O}</math> || ||
|-
|13 || [[C13|1]] || [[C13|<math>C_{13}</math>]] || ||No || <math>\mathcal{O}</math> || ||
|-
|17|| [[C17|1]] || [[C17|<math>C_{17}</math>]] || ||No || <math>\mathcal{O}</math> || ||
|-
|19 || [[C19|1]] || [[C19|<math>C_{19}</math>]] || ||No || <math>\mathcal{O}</math> || ||
|-
|23 || [[C23|1]] || [[C23|<math>C_{23}</math>]] || ||No || <math>\mathcal{O}</math> || ||
|}

Block library - User contributions [en-gb]

Classification by p-group