Task: Program Execution
Input (English): 279 Z d 5109 7215 a u R 5535 7367 g 9417 R y 3803 l 2859 L 1453 A 3899 s L S 2439 3739 f z U O a 5089 1379 4349 8243 O 9873
Output (English): 1, 4, 5, 9, 10, 12, 15, 17, 19, 21, 25, 26, 32, 33, 34, 35, 37