Task: Program Execution
Input (English): 7, C, 5, E, H
Output (English): [['7', 'C', '5', 'E'], ['7', 'C', '5', 'H'], ['7', 'C', 'E', 'H'], ['7', '5', 'E', 'H'], ['C', '5', 'E', 'H']]