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

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

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

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

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