But , even if you take out all the backchannels  so basically you treat backchannels l as nonspeech , as pauses ,
Mm - hmm.
Mm - hmm.
you still have significant overlap. You know , it goes down from maybe  For Switchboard it goes down from  I don't know  f um   I don't know  f fourteen percent of the words to maybe  uh I don't know , eleven percent or something  it 's  it 's not a dramatic change ,