Task: Program Execution
Input (English): O, B, 3395, 1361, f, 3665, d, x, 847, 9367, w, 3779, N, y, E, H, 2217, 7723, 3157, 5697, 5331, 8863, 1413, g
Output (English): 3, 4, 6, 9, 10, 12, 17, 18, 19, 20, 21, 22, 23