Task: Program Execution
Input (English): 3139 U 6685 6781 4391 3071 7187 u 6099 a S 7469 3847 8087 3209 l 877 9585 3953 B b l 3077 F f 8443 b 8647 B w
Output (English): 1, 3, 4, 5, 6, 7, 9, 12, 13, 14, 15, 17, 18, 19, 23, 26, 28