Task: Program Execution
Input (English): 2909 9871 G a 8937 8281 649 5403 J 3159 4287 j 9157 1159 4583 I Z l X p 9579 T H 873 p B 693 W 3631 7269 7173 7493 G 3459 R 6347 2893
Output (English): 1, 2, 5, 6, 7, 8, 10, 11, 13, 14, 15, 21, 24, 27, 29, 30, 31, 32, 34, 36, 37