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

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

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

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

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