
but they're what they call
"HIGHLY diversified."
Breaking Bad Season 4, Episode 7

You don't have to,
but it's HIGHLY recommended.
The Big Bang Theory Season 3, Episode 2

I HIGHLY doubt
there is any argument you can make...
The Big Bang Theory Season 3, Episode 12

Dennis is a HIGHLY sought-after
doctoral candidate.
The Big Bang Theory Season 1, Episode 12

Well, if we accept your premise and also
accept the HIGHLY improbable assumption...
The Big Bang Theory Season 1, Episode 17