B"There is a square field of size n x 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. The first line contains a single integer t ( 1 <= t <= 400 ). Then t test cases follow. The first row of each test case contains a single integer n ( 2 <= n <= 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. For 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. "...