Task: Program Execution
Input (English): f, I, 4, 0, v, k
Output (English): [['f', 'I', '4', '0', 'v'], ['f', 'I', '4', '0', 'k'], ['f', 'I', '4', 'v', 'k'], ['f', 'I', '0', 'v', 'k'], ['f', '4', '0', 'v', 'k'], ['I', '4', '0', 'v', 'k']]