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

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

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

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

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