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

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

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

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

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