Task: Program Execution
Input (English): 5, 15, ['7917', '8337', 'R', '1173', '2919', 'a', 'T', 'W', 'B', 'b', 'o', 'Z', 'H', '6785', 'M', 'i', '6023', '1709', 'z', 'T', 'x', 'X', 'k', 'U', '5531', 'x', 'q', 'n', '9357', 'n']
Output (English): M6785HZobBWTa2919