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

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

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

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

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