Cockie, H_O_S is right, I think.
I agree that there is some frustration in this. Twice Ive entered answers that could be got from letter strings in the right places, only to find clashes later on. In fact, with that answer from 3SE the only way I could find a viable entry for16NW was to use the journalist's name. I think it's stretching things a bit to regard that as part of the 'excerpt'.