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

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

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

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

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