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

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

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

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

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