CF1926A.Vlad and the Best of Five

Vladislav has a string of length $5$, whose characters are each either $\texttt{A}$ or $\texttt{B}$.

Which letter appears most frequently: $\texttt{A}$ or $\texttt{B}$?

弗拉迪斯拉夫有一个长度为 $5$ 的字符串，其每个字符均为 $\texttt{A}$ 或 $\texttt{B}$。

哪个字母出现得更频繁：$\texttt{A}$ 还是 $\texttt{B}$？

The first line of the input contains an integer $t$ ($1 \leq t \leq 32$) — the number of test cases.

The only line of each test case contains a string of length $5$ consisting of letters $\texttt{A}$ and $\texttt{B}$.

All $t$ strings in a test are different (distinct).

输入的第一行包含一个整数 $t$（$1 \leq t \leq 32$）—— 表示测试用例的数量。

每个测试用例仅有一行，包含一个长度为 $5$ 的字符串，该字符串仅由字母 $\texttt{A}$ 和 $\texttt{B}$ 组成。

所有 $t$ 个测试用例中的字符串互不相同（互异）。

For each test case, output one letter ($\texttt{A}$ or $\texttt{B}$) denoting the character that appears most frequently in the string.

对于每个测试用例，输出一个字母（$\texttt{A}$ 或 $\texttt{B}$），表示字符串中出现频率最高的字符。