Task: Program Execution
Input (English): d B 2417 z u C 6657 U B 739 u 7385 F 8937 7915 k 7217 W X s 8179 5175 1999 Z 5641
Output (English): 3, 7, 10, 12, 14, 15, 17, 21, 22, 23, 25