(0 17 2)(1 19 16 6 3)(4 9 7)(5 21 20)(8 18 15 12 10)(11 14 13)
ALLOWS (11/8)-SEQUENCE
1: (0 4 9)
(0 7 4 17 2)(1 19 16 6 3)(5 21 20)(8 18 15 12 10)(9)(11 14 13)
2: (3 16 6)
(0 7 4 17 2)(1 19 16)(3)(5 21 20)(6)(8 18 15 12 10)(9)(11 14 13)
3: (8 18 15)
(0 7 4 17 2)(1 19 16)(3)(5 21 20)(6)(8 12 10)(9)(11 14 13)(15)(18)
4: (4 17 7)
(0 7 2)(1 19 16)(3)(4)(5 21 20)(6)(8 12 10)(9)(11 14 13)(15)(17)(18)