▁derived ▁from ▁Pro to - Ind o - Europe an ▁* te p - ▁" w arm ". ▁ ▁Rel ation ▁to ▁descend ants ▁The ▁modern ▁descend ants ▁of ▁Pro to - K art vel ian ▁are ▁Georg ian , ▁S van , ▁M ing re li an ▁and ▁Laz . ▁Of ▁these , ▁M ing re li an ▁and ▁Laz ▁are ▁often ▁considered ▁dialect s ▁of ▁a ▁single ▁language , ▁called ▁Z an , ▁although ▁the ▁two ▁are ▁not ▁inher ently ▁mut ually ▁intellig ible . ▁The ▁ab la ut ▁patterns ▁of ▁Pro to - K art vel ian ▁were ▁better ▁preserved ▁in ▁Georg ian ▁and ▁( part icular ly ) ▁S van ▁than ▁in ▁either ▁M ing re li an ▁or ▁Laz , ▁in ▁which ▁new ▁forms ▁have ▁been ▁set ▁up ▁so ▁that ▁there ▁is ▁a ▁single , ▁stable ▁v owel ▁in ▁each ▁word ▁element . ▁ ▁The ▁system ▁of ▁pron oun s ▁of ▁Pro to - K art vel ian ▁is ▁distinct ▁on ▁account ▁of ▁its ▁category ▁of ▁inclus ive – ex clus ive ▁( so , ▁for ▁instance , ▁there ▁were ▁two ▁forms ▁of ▁the ▁pron oun ▁" we ": ▁one ▁that ▁includes ▁the ▁listener ▁and ▁one ▁that ▁does ▁not ). ▁This ▁has ▁surv ived ▁in ▁S van ▁but ▁not ▁in ▁the ▁other ▁languages . ▁S van ▁also ▁includes ▁a ▁number ▁of ▁arch ais ms ▁from ▁the ▁Pro to - K art vel ian ▁era , ▁and ▁therefore ▁it ▁is ▁thought ▁that ▁S van ▁broke ▁off ▁from ▁Pro to