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

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

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

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

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