Task: Program Execution
Input (English): 7, 4, I, a, X
Output (English): [['7', '4', 'I', 'a'], ['7', '4', 'I', 'X'], ['7', '4', 'a', 'X'], ['7', 'I', 'a', 'X'], ['4', 'I', 'a', 'X']]