Grid markup is a process, where each of the grid cells is marked with a star symbol (*).
Your task is very simple. You are given a grid height and weight and the output is the markup grid with the star symbol (*).
Input starts with an integer T (1<=T<=20), the number of test cases. Each of the following T lines contains two integers H and W denoting the height and weight respectively. Here 2 <= H <= 30 and 2 <= W <= 30.
For each test case, print the test case serial on a line, followed by the markup grid as described in the problem statement. Check the sample input and output for details.
2 2 2 2 3
Case 1: ** ** Case 2: *** ***