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

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

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

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

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