The Trouble with X(confusion about the "ks" sound)

Sometimes people are confused about the sound "ks": either they change it TO the sound of "s," or they use it INSTEAD OF the sound of "s." The sound "ks" is usually spelled with an "x," but it can also be spelled by "cc" before "i," "e," or "y."

Here are some words that are often mispronounced because the speaker used a "ks" sound instead of an "s" sound":
                     eScape               not eXcape
                     eSpecially           not eXpecially
                     asteriSk               not asteriX
                     eSpresso             not eXpresso
                     et cetera              not eX etera

The following words can be mispronounced when the speaker substitutes the sound of "s" for the sound of "ks":
                     succinct               suKSinct, not suSSinct  
                     ecstatic                eKStatic, not eStatic
                     accessory            aKSessory, not aSSessory
                     flaccid                  flaKSid, but flaSSid has been used so often
                                                    that it's now accepted