Task: Program Execution
Input (English): 6, 21, ['9541', 'U', 'N', '3241', 'l', '2077', 'y', '6663', 'P', 'p', 'l', 'R', '2219', 'y', 'J', 'N', '2239', 'B', '889', '9471', 'd', '6829', 'm', 'A', '3809', 'L', '5', 'z', '8979', '5451']
Output (English): d1749988B9322NJy9122RlpP3666y7702