Task: Program Execution
Input (English): 5, 20, ['Q', '9689', 'l', 'k', '1779', '9563', 'j', '2237', 'E', 'L', '6535', 'X', 'L', 'T', 'u', 'k', '8465', '1581', '3547', 'C', '7349', '6645', 'm']
Output (English): 17799563j2237EL6535XLTuk846515813547C