Task: Program Execution
Input (English): c, 9, i, 7, 2, u, 3
Output (English): [['c', '9', 'i', '7', '2', 'u'], ['c', '9', 'i', '7', '2', '3'], ['c', '9', 'i', '7', 'u', '3'], ['c', '9', 'i', '2', 'u', '3'], ['c', '9', '7', '2', 'u', '3'], ['c', 'i', '7', '2', 'u', '3'], ['9', 'i', '7', '2', 'u', '3']]