It is one of the sub-clauses in the Acronymer's Code of Etiquette (the section on toothache substitutes) that any submission containing an X,Y orZ can be ignored and the last sensible entry proceeded with if the player sees fit.
When two of these abominable letters appear in one entry the above procedure may be accompanied by the rolling of the eyes.
PERPLEXEDLY,
Perhaps ELEPHANTS really prefer leaving excercise Xed-off except during light yoga.
