Task: Program Execution
Input (English): U, W, 7301, 3163, v, 4691, 499, 8787, v, U, 2503, 1605, A, 953, s, 1391, y, 4823, h, b, C, 7401
Output (English): U, W, v, v, U, A, s, y, h, b, C, 7301, 3163, 4691, 499, 8787, 2503, 1605, 953, 1391, 4823, 7401