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

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

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

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

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