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

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

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

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

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