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

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

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

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

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