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