Task: Program Execution
Input (English): 4, 0, m, 6, u, 8
Output (English): [['4', '0', 'm', '6', 'u'], ['4', '0', 'm', '6', '8'], ['4', '0', 'm', 'u', '8'], ['4', '0', '6', 'u', '8'], ['4', 'm', '6', 'u', '8'], ['0', 'm', '6', 'u', '8']]