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

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

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

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

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