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

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

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

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

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