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

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

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

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

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