?????? ??????????????????? ?? ??????? ???????? ??? ???????????? ???? ???? ????? ?????? ????????? ??The 2 most common grammatical concepts the place this happens is when conjugating in past times or existing tenses. For examples:- ???? ??: ??, ??, ??(??, ???????? ??), ??????, ??, ????????? ????????: ??? ?????????????????·???), ?????? ?? ?? ???? ???