The spelling of the word "SSUAC" may seem confusing to some, but it can be easily explained using the International Phonetic Alphabet (IPA) transcription. It is pronounced as /swæk/ or "s-wack." The letter combination "ss" produces the /s/ sound, followed by the vowel sound /u/ represented by the letter "u." Then, the letter combination "ac" creates the sound /æk/, similar to the word "back." While it may seem unconventional, this spelling follows the rules of English phonetics.