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