um , and again , if the second pass is really , really fast  Uh , another one I 've heard of is  is in  in connected digit stuff , um , going back and l and through backtrace and finding regions that are considered to be a d a digit , but , uh , which have very low energy.
Mm - hmm. OK.
So , uh  I mean , there 's lots of things you can do in second passes , at all sorts of levels. Anyway , I 'm throwing too many things out. But.
So is that , uh  that it ?