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

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

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

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

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