B. Almost Rectangletime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere is a square field of size n \times n in which two cells are marked. These cells can be in the same row or column.You are to mark two more cells so that they are the corners of a rectangle with sides parallel to the coordinate axes.For example, if n=4 and a rectangular field looks like this (there are asterisks in the marked cells): \begin{matrix} . & . & * & . \\ . & . & . & . \\ * & . & . & . \\ . & . & . & . \\ \end{matrix} Then you can mark two more cells as follows \begin{matrix} * & . & * & . \\ . & . & . & . \\ * & . & * & . \\ . & . & . & . \\ \end{matrix} If there are several possible solutions, then print any of them.InputThe first line contains a single integer t (1 \le t \le 400). Then t test cases follow.The first row of each test case contains a single integer n (2 \le n \le 400) — the number of rows and columns in the table.The following n lines each contain n characters '.' or '*' denoting empty and marked cells, respectively.It is guaranteed that the sums of n for all test cases do not exceed 400.It is guaranteed that there are exactly two asterisks on the field. They can be in the same row/column.It is guaranteed that the solution exists.OutputFor each test case, output n rows of n characters — a field with four asterisks marked corresponding to the statements. If there multiple correct answers, print any of them.ExampleInput
6
4
..*.
....
*...
....
2
*.
.*
2
.*
.*
3
*.*
...
...
5
.....
..*..
.....
.*...
.....
4
....
....
*...
*...
Output
*.*.
....
*.*.
....
**
**
**
**
*.*
*.*
...
.....
.**..
.....
.**..
.....
....
....
**..
**..

6
4
..*.
....
*...
....
2
*.
.*
2
.*
.*
3
*.*
...
...
5
.....
..*..
.....
.*...
.....
4
....
....
*...
*...

*.*. .... *.*. .... ** ** ** ** *.* *.* ... ..... .**.. ..... .**.. ..... .... .... **.. **.. 
['implementation', '*800']