Task: Program Execution
Input (English): 7, 9, ['6481', 'X', 'x', '8313', '1485', '2857', '8909', 'D', 'i', '3923', 'j', '8731', 'h', 'K', '9345', '8599', '7245', 'H', 'N', '8533', '5369', '8137', 'S', 'z', '6255']
Output (English): 8909Di