chatter
I was actively listening to him chatter to himself and it is mostly vowels something like "eya ba ooooh ahhh buh" I did hear one guh kind of sound. There have never been any da-das or ma-mas. I take that back. His very first word was "dat (that)." Back around his birthday he would point to things, say "dat" and want to be told what it was called. He doesn't do that anymore, though. He just points (so maybe we ~are~ enabling him). He doesn't repeat anything back or mimic anything (maybe with the exception of bye bye).