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

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

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

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

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