Given a string S, find the longest palindromic substring in S.
Substring of string S:
S[ i . . . . j ] where 0 ≤ i ≤ j < len(S)
A string which reads the same backwards. More formally, S is palindrome if reverse(S) = S.
Incase of conflict, return the substring which occurs first ( with the least starting index ).
The first line of input consists number of the test cases. The following T lines consist of a string each.
In each separate line print the longest palindrome of the string given in the respective test case.
1 ≤T≤ 70
1 ≤ str≤ 100