| Σ | # | Presentation | Description | Related |
| 6 | 110 | ⟨a, b | abab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 6 | 123 | ⟨a, b | bab=aba⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 445 | ⟨a, b | aabaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 474 | ⟨a, b | ababab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 541 | ⟨a, b | abaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 549 | ⟨a, b | ababa=bab⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 586 | ⟨a, b | baab=aaba⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 587 | ⟨a, b | baab=abba⟩ | Infinite cancellative non-commutative monoid | |
| 8 | 589 | ⟨a, b | baba=abab⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 976 | ⟨a, b | abaabab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1065 | ⟨a, b | aabaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1107 | ⟨a, b | abaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1132 | ⟨a, b | abbaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1232 | ⟨a, b | aabba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1272 | ⟨a, b | abbba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 1273 | ⟨a, b | abbba=babb⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 1883 | ⟨a, b | aaabaaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 1960 | ⟨a, b | aababaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2028 | ⟨a, b | abaaabab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2055 | ⟨a, b | abababab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2211 | ⟨a, b | aabaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2259 | ⟨a, b | aabbaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2303 | ⟨a, b | abaaaba=bab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2309 | ⟨a, b | abaabab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2325 | ⟨a, b | ababaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2347 | ⟨a, b | abbaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2349 | ⟨a, b | abbaaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2355 | ⟨a, b | abbabba=bab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2489 | ⟨a, b | aabaab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2504 | ⟨a, b | aababa=baab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2571 | ⟨a, b | abaaab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2573 | ⟨a, b | abaaab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2586 | ⟨a, b | abaaba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2612 | ⟨a, b | ababba=bbab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2632 | ⟨a, b | abbbba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2633 | ⟨a, b | abbbba=babb⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2743 | ⟨a, b | baaab=aabaa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2744 | ⟨a, b | baaab=aabba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2745 | ⟨a, b | baaab=ababa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2746 | ⟨a, b | baaab=abbba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2752 | ⟨a, b | baaba=abbab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2759 | ⟨a, b | baabb=abbaa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2767 | ⟨a, b | babab=ababa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4086 | ⟨a, b | aabaabaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4234 | ⟨a, b | abaaaabab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4265 | ⟨a, b | abaababab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4487 | ⟨a, b | aaabaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4685 | ⟨a, b | aabbaaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4698 | ⟨a, b | aabbaabb=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4721 | ⟨a, b | aabbbaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4765 | ⟨a, b | abaaaaba=bab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4771 | ⟨a, b | abaaabab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4787 | ⟨a, b | abaabaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4796 | ⟨a, b | abaababa=bab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4802 | ⟨a, b | abaabbab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4837 | ⟨a, b | ababbaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4859 | ⟨a, b | abbaaaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4882 | ⟨a, b | abbbaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5125 | ⟨a, b | aabaaab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5142 | ⟨a, b | aabaaba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5172 | ⟨a, b | aababaa=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5219 | ⟨a, b | aabbaab=bbaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5289 | ⟨a, b | abaaaab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5291 | ⟨a, b | abaaaab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5332 | ⟨a, b | abaabba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5336 | ⟨a, b | abaabba=bbab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5363 | ⟨a, b | abababa=babb⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5389 | ⟨a, b | abbaaab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5393 | ⟨a, b | abbaaab=bbaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5414 | ⟨a, b | abbbbba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5614 | ⟨a, b | aaabba=baaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5663 | ⟨a, b | aabaab=baaba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5739 | ⟨a, b | aabbaa=baaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5794 | ⟨a, b | aabbba=baaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5796 | ⟨a, b | aabbba=baabb⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5802 | ⟨a, b | aabbba=bbaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5894 | ⟨a, b | ababba=baaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5902 | ⟨a, b | ababba=bbaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5940 | ⟨a, b | abbbba=baabb⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5941 | ⟨a, b | abbbba=babab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5942 | ⟨a, b | abbbba=babbb⟩ | Infinite cancellative non-commutative monoid | |
| Σ | # | Presentation | Description | Related |
| 9 | 1120 | ⟨a, b | ababab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 1712 | ⟨a, b | aabbaaaba=b⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2311 | ⟨a, b | abaabab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2318 | ⟨a, b | abaabba=bab⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2327 | ⟨a, b | ababaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2597 | ⟨a, b | ababab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2598 | ⟨a, b | ababab=bbaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 3536 | ⟨a, b | aabaaaaaba=b⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 3626 | ⟨a, b | aabbaaaaba=b⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 3646 | ⟨a, b | aabbabaaba=b⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 3665 | ⟨a, b | aabbbaaaba=b⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4641 | ⟨a, b | aababaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4773 | ⟨a, b | abaaabab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4780 | ⟨a, b | abaaabba=bab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4789 | ⟨a, b | abaabaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4817 | ⟨a, b | ababaaab=bba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4822 | ⟨a, b | abababab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4835 | ⟨a, b | ababbaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4857 | ⟨a, b | abbaaaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4870 | ⟨a, b | abbabaab=baa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5232 | ⟨a, b | aabbaba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5274 | ⟨a, b | aabbbba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5317 | ⟨a, b | abaabab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5319 | ⟨a, b | abaabab=bbaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5351 | ⟨a, b | ababaab=bbaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5939 | ⟨a, b | abbbba=baaab⟩ | Infinite cancellative non-commutative monoid | |
| Σ | # | Presentation | Description | Related |
| 7 | 225 | ⟨a, b | abaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 9 | 860 | ⟨a, b | abbaabba=b⟩ | Infinite cancellative non-commutative monoid | 1 iso |
| 10 | 2036 | ⟨a, b | abaabaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2044 | ⟨a, b | abaabbab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2077 | ⟨a, b | abbaabba=bb⟩ | Infinite cancellative non-commutative monoid | |
| 10 | 2487 | ⟨a, b | aabaab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4242 | ⟨a, b | abaaabaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4250 | ⟨a, b | abaaabbab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 4273 | ⟨a, b | abaabbaab=ba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5217 | ⟨a, b | aabbaab=baba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5315 | ⟨a, b | abaabab=baaa⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5404 | ⟨a, b | abbabba=baab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5405 | ⟨a, b | abbabba=babb⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5667 | ⟨a, b | aabaab=babba⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5694 | ⟨a, b | aababa=baaab⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5740 | ⟨a, b | aabbaa=baabb⟩ | Infinite cancellative non-commutative monoid | |
| 11 | 5857 | ⟨a, b | abaaba=babab⟩ | Infinite cancellative non-commutative monoid | |