Task: Program Execution
Input (English): 13, ['2109', 'L', 'l', '9307', 'K', 'y', '1453', '67', '4245', 'c', '2301', 'x', 'x', 'r', '2383', 'p', '7055', '4405', 'f', '5045', '7371', 't', 'm', '4673', '209', '4647', '6813', '4525', '5593', 'U', 'N', '3031', 'f', '7473', '8367']
Output (English): 2109, r, 6813