(0 20 17 15 13 9 2)(1 7 5)(3 12 4)(6 11 8)(10 16 14)(18 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)
(0)(1 20 17 15 13 9 2 7 5)(3 12 4)(6 11 8)(10 16 14)(18 21 19)
2: (2 7 9)
(0)(1 20 17 15 13 9 5)(2)(3 12 4)(6 11 8)(7)(10 16 14)(18 21 19)
3: (6 11 8)
(0)(1 20 17 15 13 9 5)(2)(3 12 4)(6)(7)(8)(10 16 14)(11)(18 21 19)
4: (1 9 5)
(0)(1)(2)(3 12 4)(5)(6)(7)(8)(9 20 17 15 13)(10 16 14)(11)(18 21 19)