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

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

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

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

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