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

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

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

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

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