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