Task: Program Execution
Input (English): a, 8405, 1173, 3481, s, 371, 7811, 8893, 3447, 7381, K, 8459, N, 5727, 8139, O, 9179, o, W, 5939, 7875, 3469
Output (English): 1, 5, 11, 13, 16, 18, 19