Final answer:
The programming languages you have been using include Python, Modula-3, Scheme, and Smalltalk (specifically in the Squeak environment).
Step-by-step explanation:
The name of the programming language you have been using in your studies seems to include several languages based on the information provided. If you're learning Python, that is one of the programming languages you've been using. For systems programming, you may be referring to Modula-3. Furthermore, if your studies have touched on the topic of THE SCHEME PROGRAMMING LANGUAGE and ANSI SCHEME SECOND, then Scheme is another language under consideration. Lastly, Squeak is an open-source Smalltalk programming environment, which might suggest that Smalltalk is the language under the hood for your Squeak-based projects.