Task: Program Execution
Input (English): 3, E, 9, U, N
Output (English): [['3', 'E', '9', 'U'], ['3', 'E', '9', 'N'], ['3', 'E', 'U', 'N'], ['3', '9', 'U', 'N'], ['E', '9', 'U', 'N']]