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