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

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

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

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

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