Task: Program Execution
Input (English): 6609 r 319 9037 j 9901 6953 5021 3921 O 5037 9093 3497 Q f t 2115 v 9503 7695 x T a 7023 6191 5755 w 7921 f
Output (English): 1, 3, 4, 6, 7, 8, 9, 11, 12, 13, 17, 19, 20, 24, 25, 26, 28