"EKSN" is not a word that exists in English. However, if we break down the individual letters phonetically, we can see how they are pronounced. "E" is represented by the vowel sound /ɛ/, "K" is a voiceless velar stop or /k/, "S" is a voiceless alveolar fricative or /s/, and "N" is a voiced alveolar nasal or /n/. So, in pronunciation, "EKSN" would be /ɛk'sn/.