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

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

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

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

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