Problem

You are given 2 strings \(s\) and \(t\) both containing only lowercase English characters with s containing some \(?\) as well. You can swap characters at positions \(i\) and \(j\) in the string \(s\) (\(j\gt i\)) any number of times and can also replace any \(?\) with any lowercase English character. Can you convert \(s\) into \(t\) ?

Input Format

• The first line contains an integer \(T\) denoting the number of test cases. 
• The first line of each test case contains an integer \(N\), the length of the strings.
• The second line of each test case contains \(N\) lowercase English characters with some \(?\)(possibly \(0\)) denoting string \(s\).
• The third line of each test case contains \(N\) lowercase English characters denoting string \(t\).

Output Format

For each test case, print '\(Yes\)' (without quotation marks) if it is possible to convert \(s\) into \(t\).Otherwise, print '\(No\)' (without quotation marks). Print the output in a new line.

Constraints

\(1 \le T \le 10\)

\(1 \le N \le 10^5\)