I was asked to name 10 linux console commands/utils consist of 3 symbols. To be honest, I ended up about 7-8 of those.
After couple of minutes at home I managed to beat this challenge, here's my list:
cat/tac top tar/dar/zip git vim ldd sed/awk apt cut cpp/c++ dig who
And yes, not sure about
git cause you probably miss them in default Debian installation, which I referred to.