Task: Program Execution
Input (English): 899, 4263, C, 7943, z, 751, A, B, 4455, u, W, 4311, 4547, f, j, R, D, T, G, x, 345, x, 4463, d
Output (English): C, z, A, B, u, W, f, j, R, D, T, G, x, x, d