It's often not getting the words but their derivations, which I find more interesting than the answers.
I am having this problem with 2d this week. I cant work out whether the first two letters are the "doesn't include" part, that "right" becomes "rt" and "pieces" becomes "pcs", OR "doesn't include" is the whole answer but with another letter added from "right".
In the first case, there's a random "e" floating about and in the second, surely "pieces" should be "piece".
Maybe I'm over analysing.