Task: Program Execution
Input (English): O, f, V, 3, 1, 7
Output (English): [['O', 'f', 'V', '3', '1'], ['O', 'f', 'V', '3', '7'], ['O', 'f', 'V', '1', '7'], ['O', 'f', '3', '1', '7'], ['O', 'V', '3', '1', '7'], ['f', 'V', '3', '1', '7']]