▁modern ▁Ukraine , ▁Bel arus , ▁Lith u ania ▁and ▁a ▁bit ▁of ▁Lat via . ▁ ▁It ▁also ▁refers ▁to ▁the ▁vern ac ular ▁form ▁of ▁Ukrain ian ▁before ▁its ▁cod ification ▁(" Old ▁Ukrain ian " ▁of ▁ 1 6 th - 1 8 th ▁centuries ). ▁In ▁ 1 6 th ▁century ▁the ▁ch an cell ery ▁language ▁of ▁the ▁Grand ▁Duch y ▁of ▁Lith u ania ▁was ▁Old ▁Ruth en ian ▁(" ру ска ▁м ова ", ▁commonly ▁called ▁" simple ▁speech " ▁(" про ста ▁м ова ". ). ▁According ▁to ▁Christian ▁St ang , ▁it ▁was ▁based ▁on ▁the ▁Ruth en ian ▁dialect s ▁of ▁the ▁region ▁around ▁Vil nius . ▁ ▁Also , ▁the ▁Pod lach ian ▁mic rol anguage ▁is ▁referred ▁to ▁by ▁loc als ▁as ▁" our ▁speech " ▁( С во я ▁м ова ), ▁" simple ▁speech " ▁( про ста ▁м ова ), ▁or ▁" local ▁speech " ▁( ту тей ша ▁м ова ) ▁( cf . ▁" T ute js zy "). ▁ ▁The ▁term ▁" simple " ▁refers ▁to ▁the ▁speech ▁of ▁" simple ▁people ", ▁ ▁as ▁a ▁distinction ▁to ▁the ▁" high ▁style " ▁of ▁official ▁and ▁written ▁language ▁of ▁the ▁time ▁and ▁region : ▁Church ▁S lav onic ▁in ▁the ▁case ▁of ▁Old ▁Ukrain ian ▁of ▁ 1 6 th - 1 7 th ▁centuries ▁and ▁the ▁Grand ▁Duch y ▁of ▁Lith u ania , ▁and ▁the ▁Polish ▁language ▁in ▁the ▁case ▁of ▁K res