Although Berrichon does not have an official grammar or pronunciation, there are general rules as to how it differs from French. Berrichon differentiates between closed and open "a". "R"s are rolled and emphatic. Words which have the "o" sound in standard French are pronounced with a close back rounded vowel, resulting in, for example, "un houmme" (man), "une poumme" (apple). The "oi" sound becomes "oé" [oe. The suffix -"eur" becomes -"eux" in Berrichon, and -"eau" becomes -"iau"; therefore, "leurs" (theirs) is "ieux" and "un seau d'eau" (a bucket of water) is "un siau d'iau".