The word "sassa" is spelled using four letters in English, however, the IPA phonetic transcription of the word reveals that there are actually two different sounds represented by the letter 's'. The first sound is represented by the IPA symbol /s/ which is a voiceless alveolar fricative, similar to the 's' sound in the word "sandwich". The second 's' sound in "sassa" is represented by the IPA symbol /z/, which is a voiced alveolar fricative, similar to the 'z' sound in the word "buzz".