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

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

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

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

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