Description Unicorn and Mule play the blues. But Unicorn has too many rules! This fun photographic easy-to-read story features the long "u" vowel sound in decodable patterns CVCe and vowel teams ou & oo. Includes blends pl, bl, st, gr, fl, ng, & tr, digraphs kn & wr, and consonants k & w as silent letters. With a note on phonics to parents and teachers at the beginning and story starters at the end, these books give kids the perfect start on educational success.