Answers by visitors named: Well...

As per the previous comment I won't giv you the fully worked solution itself. But if you can give an example of a possibility of these 3 groups I will sure give a hint.

look at my name and its b

Hal is completely right in 2020. Number two is still C. lets go and ... are wrong... Have a nice day !

The Japanese message says: Well, actually learn it and stop complaining.