The spelling of the word "Lewanna" can be explained using IPA (International Phonetic Alphabet) phonetic transcription. The first syllable is "luh" which is pronounced with a short "u" sound followed by an "uh" sound. The second syllable is pronounced "wahn" with a long "a" sound and a nasal "n" sound. The final syllable is "uh" which is pronounced with a short "u" sound followed by an "uh" sound. Therefore, the correct spelling of this word is "L-e-w-a-n-n-a."