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

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

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

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

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