Task: Program Execution
Input (English): 1927, P, V, G, B, 3287, 7817, X, 883, 2507, 225, 2325, 3643, L, L, G, 1889, Y, D, Y
Output (English): 1927, 3287, 7817, 883, 2507, 225, 2325, 3643, 1889