The spelling of "CAES" may seem unusual to some, but it can be easily understood through IPA phonetics. The first two letters are pronounced as a single sound, represented by /sɛ/. The final letter "S" is pronounced as /s/. Therefore, the correct pronunciation of "CAES" is /sɛs/. This is a common way to spell the plural form of words that end in the letter "S" to avoid confusion with possessive forms. For example, "the dogs' toys" versus "the dogs' toy".