The spelling of the word "Carietta" can be explained using the International Phonetic Alphabet (IPA). The "Car" sound is pronounced as /kær/, which is a voiced velar plosive sound followed by a front, unrounded vowel sound. The "i" in "ietta" is pronounced as /i/, which is a front, unrounded close vowel sound. The "et" sound is pronounced as /ɛt/, which is an open-mid front unrounded vowel sound followed by a voiceless alveolar plosive sound. Finally, the "ta" sound is pronounced as /tə/, which is a voiceless alveolar plosive sound followed by a central vowel sound.