Task: Program Execution
Input (English): 8983, U, U, 7847, 8965, 5361, m, x, I, 4211, h, 9725, F, c, 1151, L, 2309, 2593, P, 9273, a
Output (English): 2, 3, 7, 8, 9, 11, 13, 14, 16, 19, 21