Task: Program Execution
Input (English): 523 8233 6187 1819 Y 3925 5669 2995 E z 6027 W P K 3523 f O b K R 3009 9981 o G 4997 v I P 2391 6447 6287 K Y T 8393 4619 j 959 8679
Output (English): 1, 2, 3, 4, 6, 7, 8, 11, 15, 21, 22, 25, 29, 30, 31, 35, 36, 38, 39