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

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

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

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

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