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

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

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

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

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