Task: Program Execution
Input (English): 3775, 5479, 4363, 1939, 3281, I, 2637, 3863, Y, 8563, c, Q, 6723, o, d, 975, 4455, 7617, b, S, Q, 1365
Output (English): 6, 9, 11, 12, 14, 15, 19, 20, 21