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