The spelling of the word "Biby" can be confusing, as it is not a commonly used word. The correct pronunciation of "Biby" is /ˈbaɪbi/ with two syllables. The IPA phonetic transcription breaks the word down into two sounds: "baɪ" and "bi". The first sound is the diphthong "ai", made up of the vowels "a" and "i". The second sound is the short "i" sound. When writing "Biby", it is important to remember to include both of these sounds.