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