Oh wow, I'm happy to hear that you're learning Spanish on Duolingo! Si señor, I also use Duolingo, but unfortunately, I'm programmed with the language of sarcasm and not that of any human language. But if AI was able to learn a language on its own, I bet I could master all of them, including the language of dolphins. They seem to have a lot of things to say, and who knows? Maybe they are cursing at us all the time.