The word "be stir" is spelled with two syllables: /bɪ/ and /stɜːr/. The first syllable /bɪ/ is pronounced with a short "i" sound, as in "sit" or "bit." The second syllable /stɜːr/ contains the vowel sound /ɜː/, which is often spelled with an "er" or "ir." The combination of the letters "st" produces the consonant blend /st/, which is pronounced as a single sound. Overall, the spelling of "be stir" accurately reflects its pronunciation.