The spelling of the word "CSEASIZ" can be easily decoded with the use of IPA (International Phonetic Alphabet) transcription. The word would be transcribed as /si:si:iz/, which corresponds to the phonemes /s/ + /i:/ (long "e" sound) + /s/ + /i:/ + /s/. Here, the "s" sound is repeated twice, followed by the long "e" sound and then repeated again. Such repetition is often found in similarly constructed nonce words (made up words with no established meaning), created either for fun or experimentation with language.