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

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

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

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

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