Another thing to watch out for is the proper nouns. Even if parts of them get split, like "Mizuki Yayoi", I have to make sure not to touch those. Also, contractions like "it's" should be expanded to "it is" to avoid confusion in synonyms. Wait, the example in the user's history shows that proper nouns are left untouched, so "Mizuki Yayoi" stays, and other words are replaced.
When the user says to rewrite all words with 3 synonyms, does that mean every word, including common verbs and nouns? So even small words like "is" might become "exists|serves|functions". But sometimes there's not enough space for three synonyms. Wait, the example shows "may" as "could|might|shall", so maybe the user expects three options even if some are not perfect. Mizuki Yayoi
Once all words are replaced, I'll check the proper nouns again to ensure they are skipped. Finally, present the text with the synonyms in c format as specified. Let me proceed to do that now. Another thing to watch out for is the proper nouns