Task: Program Execution
Input (English): 7, 15, ['119', '941', '123', '6003', '227', 'E', '9191', '1967', '2919', '7915', 'G', '8519', 'a', '9447', '823', 'k', 'y', 'V', 'l', 'H', 'C']
Output (English): 9191196729197915G8519a9447823