In OotP, Battle of the Department of Mysteries, Neville's mouth is injured, which prevents him from talking clearly. He mumbles several things, some are discernible while others are not.For example :
'Longbottom?'repeated Bellatrix, and a truly evil smile lit her gaunt face.'Why I have had the pleasure of meeting your parents,boy'
'I DOE YOU HAB',roared Neville...
Like the above example, Neville mumbles many other things. On these occasions , what is he trying to say ? What does he mean ?