B - No story in this one

Given two strings $S_1$ and $S_2$ , both of same length. Each index $i$ of $S_1$ has a type $t_i$ , and swapping characters between two indices of same type is allowed in $S_1$. Print "Yes" if you can convert $S_1$ to $S_2$ after any number of valid swaps, otherwise print "No"; ###Input: - First line will contain $T$, number of testcases. Then the testcases follow. - First line of each testcas