sentences:  (Standard) Croatian is considered a normative variety of Serbo-Croatian, and is mutually intelligible with the other three national standards, Serbian, Bosnian, and Montenegrin (see Comparison of standard Bosnian, Croatian, Montenegrin and Serbian) which are all based on the Shtokavian dialect.Besides Shtokavian, Croats from the Adriatic coastline speak the Chakavian dialect, while Croats from the continental northwestern part of Croatia speak the Kajkavian dialect.Vernacular texts in the Chakavian dialect first appeared in the 13th century, and Shtokavian texts appeared a century later.