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

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

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

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

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