Not a Word

Although I use many tongue twisters, my family is worried because so far I haven't said anything understandable. They are afraid I will never learn to talk, but come on! I'm only four months old! Have some patience with me. Don't I sing along with the songs Jan whistles and Sophia sings to me? I still sing in my own personal key with my own private words, but I am busy storing all yours in my memory. Have you forgotten how many words I know already? Perhaps I don't say them, but I do recognize them.