数字0、1、2、3、4、5、6、7、8、9分别关联 a~z 26个英文字母。
0 关联 "a","b","c"
1 关联 "d","e","f"
2 关联 "g","h","i"
3 关联 "j","k","l"
4 关联 "m","n","o"
5 关联 "p","q","r"
6 关联 "s","t"
7 关联 "u","v"
8 关联 "w","x"
9 关联 "y","z"
例如7关联"u","v",8关联"x","w",输入一个字符串例如“78”,
和一个屏蔽字符串“ux”,那么“78”可以组成多个字符串例如:“ux”,“uw”,“vx”,“vw”,过滤这些完全包含屏蔽字符串的每一个字符的字符串,然后输出剩下的字符串。
示例:
输入:
78
ux
输出:<