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