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