Task: Program Execution
Input (English): N, 9, 4, n, 4, 0
Output (English): [['N', '9', '4', 'n', '4'], ['N', '9', '4', 'n', '0'], ['N', '9', '4', '4', '0'], ['N', '9', 'n', '4', '0'], ['N', '4', 'n', '4', '0'], ['9', '4', 'n', '4', '0']]