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

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

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

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

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