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

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

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

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

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