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