The forms from the two more declensions sometimes occur in a speech for the masculine words of the fifth declension: of the third and of the first declensions. Similar case is with the masculine words of the third declension – they are sometimes declined in the first declension (because singular nominative is the same). Such a shift is a mistake of declension. For example, a word akmuo, akmens can have the forms (third d.) (sg. nom., sg. gen.) akmenis, akmenies – more like older dialectal not used widely and a little likely to be heard in a speech – and (first d.) akmenis, akmenio; akmenys, akmenio; akmenas, akmeno – sometimes said by the speakers, who don't know the fifth declension well, for example, children. But these variants are possibly also present as dialectal forms. The other examples which are sometimes used by some, but not fit are: rudenio (rudens), šunio (šuns, šunies) etc. 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).