Task: Program Execution
Input (English): 16, 21, ['e', '9909', '6989', 'o', 'M', 'a', '5333', '1285', '6621', '4785', 'x', 'y', '1663', 'F', 'n', '6701', '5013', '209', '9111', 'u', 'v', '3121']
Output (English): vu111990231051076