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

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

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

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

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