Task: Program Execution
Input (English): x 1481 1277 6345 c 619 v 9521 9123 9789 g f 6365 s 4677 B 1509 3033 3481 D g s k 243 Z m 5075 x 1421 V 5343 8673 l O k p
Output (English): 1, 5, 7, 11, 12, 14, 16, 20, 21, 22, 23, 25, 26, 28, 30, 33, 34, 35, 36