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

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

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

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

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