Task: Program Execution
Input (English): 12, 19, ['1013', '1603', '1439', '8689', 'k', '9721', '4587', '3287', 'b', 'Y', '445', 'r', 'm', '1503', 'f', '5035', 'C', '8025', 'b', '7853', '8357', 'u', 'F']
Output (English): b8025C5035f1503mr