 This rule sometimes leads to the insertion of an orthographic vowel that does not influence the pronunciation of the vowel.For example, plurals in Gaelic are often formed with the suffix ' , for example, ' (shoe) / ' (shoes).But because of the spelling rule, the suffix is spelled ' (but pronounced the same, ) after a slender consonant, as in ' ((a) people) / ' (peoples) where the written ' is purely a graphic vowel inserted to conform with the spelling rule because an ' precedes the "".