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