Task: Program Execution
Input (English): 9, 13, ['9713', '4381', '5047', '5249', 'X', 'y', '8139', '7147', '1133', 'O', 'Z', 'd', '1707', '1079', 'C', '309', '2899', 'C']
Output (English): 1133OZd1707