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

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

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

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

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