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

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

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

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

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