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