Task: Program Execution
Input (English): 7397 E m p 6873 C 9053 7489 c T d 5959 5235 1021 4611 d N A S 1661 g 3425 7383 Z N 3287 c 27 3509 i x Y 2167 1845 f J u
Output (English): 1, 5, 7, 8, 12, 13, 14, 15, 20, 22, 23, 26, 28, 29, 33, 34