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CF1672B.I love AAAB
I love AAAB
Let's call a string good if its length is at least and all of its characters are A except for the last character which is B. The good strings are . Note that B is not a good string.
You are given an initially empty string .
You can perform the following operation any number of times:
- Choose any position of and insert some good string in that position.
Given a string , can we turn into after some number of operations?
Input
Each test contains multiple test cases. The first line contains a single integer () — the number of test cases. The description of the test cases follows.
The first line of each test case contains a single string ().
It is guaranteed that consists of only the characters A and B.
It is guaranteed that the sum of over all test cases does not exceed .
Output
For each test case, print "YES" (without quotes) if we can turn into after some number of operations, and "NO" (without quotes) otherwise.
You can output "YES" and "NO" in any case (for example, strings "yEs", "yes" and "Yes" will be recognized as a positive response).
Note
In the first test case, we transform as such: $\varnothing \to \color{red}{\texttt{AAB}} \to \texttt{A}\color{red}{\texttt{AB}}\texttt{AB}$.
In the third test case, we transform as such: .
In the second and fourth test case, it can be shown that it is impossible to turn into .
Samples
4
AABAB
ABB
AAAAAAAAB
A
YES
NO
YES
NO
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