Task: Program Execution
Input (English): 15, 19, ['7257', 'E', '3009', 'E', 'i', 'Q', 'e', '5877', 'm', 'R', '8777', 'l', '511', 'x', '7321', '6299', 'j', 'L', '8091', '4687', 'z']
Output (English): 1908Lj99261237