Task: Program Execution
Input (English): 13, 14, ['7863', '2507', 'L', '7965', '1097', 'I', 'q', 'a', '7611', 't', '2097', '4399', '8683', 't', 'm', 'g', '7693', '4427', 'x', 'u', 'c', '8313']
Output (English): 8683t