Task: Program Execution
Input (English): 7559 k H 6729 Y K W x 1981 v 4939 5313 o B W 2099 u 6769 i g K B T x L 5535 8635 4245 H O
Output (English): 2, 3, 5, 6, 7, 8, 10, 13, 14, 15, 17, 19, 20, 21, 22, 23, 24, 25, 29, 30