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

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

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

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

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