Task: Program Execution
Input (English): 1509, X, T, 3851, 5937, E, z, 5703, d, s, B, g, R, 9813, 1089, 5233, 4803, 8315, 7333, 7675
Output (English): 1, 4, 5, 8, 14, 15, 16, 17, 18, 19, 20