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