More morphemes

Tonight I was actually quite shocked to hear V use the English plural. The plural form she used was "balls." I am pretty sure it was not an accident, because she very readily uses the singular form when she sees just one ball. In this case, there were a bunch of tiny balls inside a plastic toy she has. I think I can pretty safely say that this is her second morpheme. The first was the possessive -s, now comes the plural -s.