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

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

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

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

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