Task: Program Execution
Input (English): 7399, I, 4489, 2793, B, a, 5535, f, 7547, V, F, 1881, 6491, T, 9995, e, 4233, 8109, 9321, D, 931, A, 5211, V
Output (English): 7399, 4489, 2793, 5535, 7547, 1881, 6491, 9995, 4233, 8109, 9321, 931, 5211