Task: Program Execution
Input (English): 7223 147 f 2997 4083 6345 5863 l B a 5707 v a 6685 S z 2655 g P 5007 6727 a 7267 5593 w 7813 J 1061 2117 7227 467 I I a
Output (English): 1, 2, 4, 5, 6, 7, 11, 14, 17, 20, 21, 23, 24, 26, 28, 29, 30, 31