Years ago I came across a question about what language does your brain think in as a multilingual speaker - I wondered about it and self-answered my question by thinking about it in English.
Today I realised there's another unexpected layer to that. I saw the word cat, which is paint in Malay and the animal, cat, in English. The first thing that came to my mind however was the #Linux command, cat
(short for concatenate). With that limited data, I guess my brain's preferred language is #Bash > English > Malay.