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

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

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

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

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