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

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

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

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

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