The B'rknaa language was the native language of the B'rknaa species from Indobok. It consisted of loud, raspy sounds and didn't have a word for "I", since the B'rknaa shared a communal mind.
The protocol droid C-3PO learned the B'rknaa language when Captain Jace Forno briefly abandoned him on Indobok in 5.5 BBY.