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

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

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

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

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