Task: Program Execution
Input (English): u 7503 C 9275 j O U 6417 9661 k c 7347 g A C l 7917 4177 u x K 7379 v d 9981 c h z J 5485 9229 Z 7545 f M
Output (English): 1, 3, 5, 6, 7, 10, 11, 13, 14, 15, 16, 19, 20, 21, 23, 24, 26, 27, 28, 29, 32, 34, 35