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

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

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

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

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