?? ???? ???????? ?????? ????????? ?? ??????.The two most frequent grammatical concepts wherever this occurs is when conjugating in the past or current tenses. For examples:?? ???? ??????, ???? ???? ???? ?? ??? ??????.??(??)?? ?????? : ??, ??, ????, ??, ???? ?·???????, ?? ?????? : ?????? ?????????? ??·??????????? ???????????? ?? ?????????? ?? ????