Description Blair is afraid of heights and keeps missing out on the fun at the fair. Can a man with a long beard help her with her fear? The phonemes /air/ure/ are featured in this title. In Level 4 - Blue books, children build on the letter-sound combinations learned in levels 1 and 2. They learn consonant digraphs (sounds made up of two letters together such as 'ch' or "ll") and long vowel sounds (such as 'igh' or 'ai').