Task: Program Execution
Input (English): C, l, f, 3157, R, h, 5997, 5963, c, G, i, 3155, 3939, 5633, z, F, 8365, 107, 5607, D
Output (English): 1, 2, 3, 5, 6, 9, 10, 11, 15, 16, 20