Task: Program Execution
Input (English): 4, 8, ['5603', '6275', 'Z', '4731', '4489', '1081', '7129', 'e', '6549', 'k', '7629', 'I', 'R', 'P', 'o', 'U', '7491', '5187', 'i', 'j', '2491', '1171']
Output (English): 4731, I, j