Description Books 13 18 continue to reinforce consonant digraphs at the beginning and the end of words but now introduce consonant blends. These include the l family, r family and s family. These books also include the double consonants when adding endings ed and ing. Books 13-18 reinforce contractions, posssessives and endings. This title provides several examples of consonant digraphs bl, cl, br, gr, tr, st, through the story of the people who live and work in Dee Street.