Word on the Paper

Description:

Input:

The input consists of multiple test cases. The first line of the input contains a single integer $$$t$$$ ($$$1 \leq t \leq 1000$$$) — the number of test cases.

Each test case consists of $$$8$$$ lines, each containing $$$8$$$ characters. Each character in the grid is either $$$\texttt{.}$$$ (representing a dot) or a lowercase Latin letter ($$$\texttt{a}$$$–$$$\texttt{z}$$$).

The word lies entirely in a single column and is continuous from the beginning to the ending (without gaps). See the sample input for better understanding.

Output:

For each test case, output a single line containing the word made up of lowercase Latin letters ($$$\texttt{a}$$$–$$$\texttt{z}$$$) that is written vertically in one column from top to bottom.

Sample Input:

5
........
........
........
........
...i....
........
........
........
........
.l......
.o......
.s......
.t......
........
........
........
........
........
........
........
......t.
......h.
......e.
........
........
........
........
........
.......g
.......a
.......m
.......e
a.......
a.......
a.......
a.......
a.......
a.......
a.......
a.......

Sample Output:

i
lost
the
game
aaaaaaaa