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

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

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

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

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