Also, preserve the 2nd "e" when there's a double "e" at the conclusion of the term, like "see" in "seeable" or "flee" in "fleeing." These "Es" are held so which the pronunciation is suitable. Not a word in the English language may have the letter ‘s’ following ‘x’. Look at https://spelling-rules60471.actoblog.com/33478983/spelling-rules-in-english-for-dummies