first 10 solutions:
clique size 6: [6, 7, 13, 22, 36, 42]
clique size 6: [20, 25, 33, 37, 39, 49]
clique size 6: [20, 30, 33, 39, 49, 50]
clique size 6: [20, 25, 33, 39, 49, 50]
clique size 6: [6, 7, 13, 33, 42, 46]
clique size 6: [6, 13, 24, 33, 46, 48]
clique size 6: [6, 13, 24, 33, 42, 46]
clique size 6: [4, 11, 22, 47, 48, 50]
clique size 6: [5, 8, 11, 19, 24, 31]
clique size 6: [1, 2, 7, 16, 36, 49]