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

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

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

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

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