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