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