Task: Program Execution
Input (English): E, 3, 3, u, 7, 2
Output (English): [['E', '3', '3', 'u', '7'], ['E', '3', '3', 'u', '2'], ['E', '3', '3', '7', '2'], ['E', '3', 'u', '7', '2'], ['E', '3', 'u', '7', '2'], ['3', '3', 'u', '7', '2']]