Task: Program Execution
Input (English): [6695, 6281, 2867, 'v', 'U', '4969', 'u', 'D', 'q', 177, 3889, 'H'], ['C', 2121, 4185, 3481, 'E', 'v', 'U', '4969', 'u', 'D', 'd', 3657, 'u', 'X']
Output (English): v, U, 4969, u, D