sentences:  Examples of migrants from the third declension (-is, -ies) are, for example, dantis, dančio instead of dantis, danties.Such use like akmenas, akmeno; dančio; šunio; rudenio; is a clear mistake and is not accepted.A case of petys, pečio instead of petys, peties is also a mistake, but petys is the only one -ys (instead of -is) form declined in the third declension and consequentely tends to be declined like all other -ys words (of the first declension).