| Σ | # | Presentation | Description | Related |
| 9 | 1470 | ⟨a, b | aaa=bb, abab=1⟩ | Finite non-Abelian group with 30 elements | 73 iso |
| 9 | 1907 | ⟨a, b | aab=a, bbbbb=1⟩ | Finite non-commutative monoid with 30 elements | 11 iso, 4 anti-iso |
| 9 | 2443 | ⟨a, b | aaa=1, abbbb=b⟩ | Finite non-commutative monoid with 30 elements | 14 iso, 5 anti-iso |
| 10 | 6560 | ⟨a, b | aaa=a, bbbb=ab⟩ | Finite non-commutative monoid with 30 elements | |
| 11 | 11058 | ⟨a, b | abba=bbb, baba=1⟩ | Finite non-Abelian group with 30 elements | 8 iso |
| 11 | 13115 | ⟨a, b | bbb=aaa, aaba=b⟩ | Finite non-commutative monoid with 30 elements | |
| 11 | 15979 | ⟨a, b | aaa=aa, bbbb=ab⟩ | Finite non-commutative monoid with 30 elements | |
| 11 | 20847 | ⟨a, b | ab=aa, bbbbb=bb⟩ | Finite non-commutative monoid with 30 elements | |