The spelling of the word "Maisa" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The word is pronounced /maɪsə/. The "ai" in the spelling represents the diphthong /aɪ/, which is pronounced as a combination of the sounds "ah" and "ee". The final "a" is pronounced as a schwa sound, represented by /ə/. Therefore, "Maisa" is spelled as it is pronounced: with a combination of the "ah" and "ee" sounds followed by a schwa sound at the end.