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Given a grid containing n rows and m columns, print the given pattern. Input - First line of input contains a single integer T denoting the number of test cases. For each test case, there will be single line containing two integers n and m. Output - For each test case, Print the required pattern. After each test case, print newline. Constraints - 1 ≤ T ≤ 5 - 1 ≤ n, m ≤ 40 Example

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solution.cppC++17

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