Task: Program Execution
Input (English): 16, 20, ['1273', 'u', '3423', 'z', '3255', '2421', 'b', 'O', 's', '2057', '977', 'F', '7863', '8565', 'M', '5545', 'c', '6471', 'g', '4977']
Output (English): 7794g1746c5455