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