Need and not
The two words that make up the contraction "can't" are "cannot."
"who" and "will" make up the contraction "who'll."
I + will = I'll
"You" and "would" make up the contraction "you'd".
"you" and "would" make up the contraction "you'd."
They and are make up they're
Does not.
will + not
they and are
You are.
will not
He'll