Question
I want to insert between words ~-, the location is between the third to the last second charac
([a-z]{3})([a-z]{0})([a-z]{2})
([a-z]{3})([a-z]{1})([a-z]{2})
([a-z]{3})([a-z]{2})([a-z]{2})
([a-z]{3})([a-z]{3})([a-z]{2})
([a-z]{3})([a-z]{4})([a-z]{2})
([a-z]{3})([a-z]{5})([a-z]{2})
Replace:
$1$2~-$3
How can these regular beings merge into one.
They seem to be different from this
([a-z]{3})([a-z]{1,})([a-z]{2})
I want to insert between words ~-, the location is between the third to the last second charac
why Meteorological book
The result is like this:

