Task: Program Execution
Input (English): 1157 8923 6841 k U u 3359 U 2091 X 4617 O 9003 G r 1279 i 1801 5777 5763 3741 i 2295 H B 7669 2997 d
Output (English): 1, 2, 3, 7, 9, 11, 13, 16, 18, 19, 20, 21, 23, 26, 27