Contractions

 I'd   (I would)
he's   (he is)
haven't (have not)
doesn't  (does not)
let's  (let us)
there's  (there is)
wouldn't  (would not)
what's   (what is)
she's  (she is)
aren't  (are not)
hasn't  (has not)
couldn't  (could not)
he'd  (he would OR he had)
they're  (they are)