The spelling of the word "Nellwin" can be explained using the International Phonetic Alphabet (IPA). The initial sound is /n/, followed by a short /ɛ/ sound. The double /l/ represents a long /l/ sound, while the next syllable starts with a /w/ sound. The final syllable has a long /i/ sound, represented by the letter "i". Overall, the IPA transcription for "Nellwin" is /ˈnɛl.wɪn/. It is important to spell words accurately to avoid confusion and ensure clear communication.