Back in the middle of May, Mab started saying "Hot!" This is usually accompanied by lots of hand-waving at the hot object.
This was followed a week or so later by "uh-oh."
At the beginning of June, she added "woof, woof," "kitty," "uh-uh," "die-die," which means goodbye, "ah-oo" for "thank you" and "there you go," and "gada," which means Grandad, Daddy, Faelan, etc..
I should note that since at least April, she has been saying "dat" while pointing at something which she wants to be identified or handed to her.
Life is now a series of uh-ohs and uh-uhs: Uh-oh, she's in bed without a toy, she dropped some toast, she stepped on a pebble. Uh-uh, she would not like to go to the toilet, sit in her car seat, come back, or wear that dress.