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

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

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

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

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