Lincoln's "words" at 15 months

The last few days of Lincoln's 15 month have brought with it many new sounds and words. What an answer to our prayers. These are the most consistent ones we hear.

uh-oh
Mommy-can mean anyone or anything
Mama-again, can mean anyone or anything
Ma-more
bad-bird
apple-apple, lime, most round things
ball-ball, other round things
baby in a really high pitched voice-baby sister doll
there
this
I did it
me, me, me-doesn't seem to have a consistent meaning
alawaga-alligator
hippo-hippo
uh ma-help