Task: Program Execution
Input (English): 4, ['z', '5321', 'Z', 'Q', '501', 'X', 'r', '1977', 'W', 'l', 'o', '3101', '1395', 'H', 'q', '2877', 'u', 'x', 'U', 'U', 'r', 'N', '9323', '4727']
Output (English): z, 501, W, 1395, u, r