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

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

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

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

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