Task: Program Execution
Input (English): 7, K, 9, k, n, 1, W
Output (English): [['7', 'K', '9', 'k', 'n', '1'], ['7', 'K', '9', 'k', 'n', 'W'], ['7', 'K', '9', 'k', '1', 'W'], ['7', 'K', '9', 'n', '1', 'W'], ['7', 'K', 'k', 'n', '1', 'W'], ['7', '9', 'k', 'n', '1', 'W'], ['K', '9', 'k', 'n', '1', 'W']]