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

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

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

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

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