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

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

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

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

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