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

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

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

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

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