2908.Watto and Mechanism

Time Limit: 1s Memory Limit: 256MB

Watto, the owner of a spare parts store, has recently got an order for the mechanism that can process strings in a certain way. Initially the memory of the mechanism is filled with n strings. Then the mechanism should be able to process queries of the following type: "Given string s, determine if the memory of the mechanism contains string t that consists of the same number of characters as s and differs from s in exactly one position".

Watto has already compiled the mechanism, all that's left is to write a program for it and check it on the data consisting of n initial lines and m queries. He decided to entrust this job to you.

Input Format(From the terminal/stdin)

The first line contains two non-negative numbers n and m (0 \le n \le 3 \cdot 105, 0 \le m \le 3 \cdot 105) - the number of the initial strings and the number of queries, respectively.

Next follow n non-empty strings that are uploaded to the memory of the mechanism.

Next follow m non-empty strings that are the queries to the mechanism.

The total length of lines in the input doesn't exceed 6 \cdot 105. Each line consists only of letters 'a', 'b', 'c'.

Output Format(To the terminal/stdout)

For each query print on a single line "YES" (without the quotes), if the memory of the mechanism contains the required string, otherwise print "NO" (without the quotes).

Sample Input

Copy
2 3
aaaaa
acacaca
aabaa
ccacacc
caaac
 · \n
     \n
       \n
     \n
       \n
     \n

Sample Output

Copy
YES
NO
NO
   \n
  \n
  \n

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