Task: Program Execution
Input (English): 3, 10, ['7215', '4747', 'B', 'd', '8487', '2783', 'Y', 'y', '3355', 'X', 'k', 'O', '8727', 'a', 'G', 'A', 'e', '3997', '3155', '489']
Output (English): X5533yY38727848dB