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