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