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

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

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

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

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