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