(0 18 13)(1 19 3)(2 5 4)(6 20 15)(7 11 9)(8 16 14)(10 17 12)
ALLOWS (11/8)-SEQUENCE
1: (6 11 15)

(0 18 13)(1 19 3)(2 5 4)(6)(7 11 20 15 9)(8 16 14)(10 17 12)
2: (8 16 14)

(0 18 13)(1 19 3)(2 5 4)(6)(7 11 20 15 9)(8)(10 17 12)(14)(16)
3: (10 17 12)

(0 18 13)(1 19 3)(2 5 4)(6)(7 11 20 15 9)(8)(10)(12)(14)(16)(17)
4: (9 20 15)

(0 18 13)(1 19 3)(2 5 4)(6)(7 11 20)(8)(9)(10)(12)(14)(15)(16)(17)