Task: Program Execution
Input (English): 3797 2685 8469 g D X 8691 1035 689 v 9807 p 2385 Z 69 9017 Y 6933 1025 F 4999 8965 r Z 5977 5343 8373 a A g p b R
Output (English): 1, 2, 3, 7, 8, 9, 11, 13, 15, 16, 18, 19, 21, 22, 25, 26, 27