Birbirleriyle tokalaştılar. - They shook hands with each other.
Birbirleriyle tokalaştılar.
They shook hands with each other.
Onlar birbirleriyle konuşuyor. - They are talking with each other.
Onlar birbirleriyle konuşuyor.
They are talking with each other.
... But if we're honest with each other, we'll also admit that ...
... The webmasters taught each other. ...