Alphablocks Season 3 Episode 21 How Now, Brown Cow? Episode Title:How Now, Brown Cow?.Episode Description:The Alphablocks meet their match when Brown Cow and her singing friends Owl, Howl and Growl take the stage! This episode has fun with the '-ow-' digraph and the words cow, brown, owl, howl, growl, gown, crown, town and down.