Task: Program Execution
Input (English): a 6749 O 2765 7595 4003 3873 4377 8595 z 1309 B z 4445 1087 5843 D J 9595 U 8187 M a 3699 l 3317 9333
Output (English): 2, 4, 5, 6, 7, 8, 9, 11, 14, 15, 16, 19, 21, 24, 26, 27