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

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

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

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

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