Task: Program Execution
Input (English): 6, 15, ['1699', 'g', 'L', 'b', 't', 'w', 'B', '9417', '8527', 'W', 'v', '723', '2649', 'B', 'o', '1425', '4491', 'g', 'n', '1981', 'U', '535', 'M', '4249', 'i', '6239']
Output (English): wB94178527Wv7232649Bo