Task: Program Execution
Input (English): 7, c, 6, 6, B, 9, X
Output (English): [['7', 'c', '6', '6', 'B', '9'], ['7', 'c', '6', '6', 'B', 'X'], ['7', 'c', '6', '6', '9', 'X'], ['7', 'c', '6', 'B', '9', 'X'], ['7', 'c', '6', 'B', '9', 'X'], ['7', '6', '6', 'B', '9', 'X'], ['c', '6', '6', 'B', '9', 'X']]