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

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

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

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

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