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