<i>The Oxford Guide to Style</i> supports the following for the plurals of letters and words:<br/><br/><br/>‘a’s / ‘L’s / ‘maybe’s<br/><br/><br/>My question: If the plural of the word is formed by adding -<i>es</i>, which would be the correct choice below by following <i>Oxford</i>'s format?<br/><br/><br/>‘whereas’es (I say this one.)<br/><br/>‘whereas’s<br/><br/><br/>Thank you.