sentences:  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