Task: Program Execution
Input (English): 4, 5, ['9941', 'H', '6031', '5687', '7467', '2659', '41', '2427', 'T', 'D', 'i', '773', '1099', '6369', '9145', 'L', 'X', '8337', 'U', '6423', 'b']
Output (English): 5687, T, 6369, U