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

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

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

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

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