
I didn't want you to see
until I COULD do one.
The Big Bang Theory Season 6, Episode 6

that actually
COULD be kind of fun.
The Big Bang Theory Season 12, Episode 9

we COULD still be
part of the fun.
The Big Bang Theory Season 7, Episode 22

Going further than anyone
ever thought it COULD.
The Big Bang Theory Season 8, Episode 6

Really? Boy, you'd think you COULD trust
a horde of Hungarian Barbarians.
The Big Bang Theory Season 2, Episode 3