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

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

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

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

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