
...with a triple LETTER
and a double word score for 72 points.
The Big Bang Theory Season 6, Episode 6

If they found out
that I wrote that LETTER,
Game of Thrones Season 7, Episode 6

It's this stupid LETTER.
The Big Bang Theory Season 6, Episode 19

And a funny Greek LETTER.
The Big Bang Theory Season 5, Episode 16

Okay, there's something
for your LETTER:
The Big Bang Theory Season 11, Episode 11