Task: Program Execution
Input (English): 5743, e, 7703, 417, 7655, 3233, y, i, 9033, z, 8107, 447, M, 4641, 2261, 9675, G, 3799, 1049, F, f
Output (English): 2, 7, 8, 10, 13, 17, 20, 21