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

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

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

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

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