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

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

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

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

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