CF1619A.Square String?

A string is called square if it is some string written twice in a row. For example, the strings "aa", "abcabc", "abab" and "baabaa" are square. But the strings "aaa", "abaaab" and "abcdabc" are not square.

For a given string $s$ determine if it is square.

The first line of input data contains an integer $t$ ( $1 \le t \le 100$ ) —the number of test cases.

This is followed by $t$ lines, each containing a description of one test case. The given strings consist only of lowercase Latin letters and have lengths between $1$ and $100$ inclusive.

For each test case, output on a separate line:

• YES if the string in the corresponding test case is square,
• NO otherwise.

You can output YES and NO in any case (for example, strings yEs, yes, Yes and YES will be recognized as a positive response).