Task: Program Execution
Input (English): 7039 6463 U B f 3507 w 4755 y 1861 W j 4115 T 8269 B 5629 A K 3589 6365 4573 a 1901 2981 2683 j l 435 4661 2925
Output (English): 3, 4, 5, 7, 9, 11, 12, 14, 16, 18, 19, 23, 27, 28