Task: Program Execution
Input (English): o, n, 7721, 4619, 5987, 6931, V, X, 4027, r, 6885, 3543, 6837, 3531, P, 8905, 5551, 2957, X, t, 1671, 6655, 4947, f
Output (English): 1, 2, 7, 8, 10, 15, 19, 20, 24