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

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

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

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

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