They have her PATTERN on file.
The Big Bang Theory Season 5, Episode 21
The interference PATTERN was cool
when the electron beam was on.
The Big Bang Theory Season 3, Episode 10
...in a wheel-and-spoke PATTERN.
The Big Bang Theory Season 3, Episode 14
You answered the multiple choice
questions in a PATTERN.
The Big Bang Theory Season 2, Episode 13
It's just... It's my PATTERN.
The Big Bang Theory Season 1, Episode 3