Description

Given a binary string of even length, write a program to swap the bits at odd and even positions.

Input Format

The input contains multiple test cases.
The first line of input is an integer C, indicating the number of test cases.
Each of the following C lines contains a binary string, guaranteed to be of even length (length ≤ 50).

Output Format

For each test case, output the result after swapping the bits at odd and even positions. Each output should occupy a single line.

2
0110
1100

1001
1100

来源

CodesOnline