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

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

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

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

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