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