- ??? ????(????? ??)???? ?? ????????? ?? ???? ??.The 2 most common grammatical rules exactly where this occurs is when conjugating in past times or present tenses. For illustrations:????? ???? ?? '??????' ?????????? ?? ???????? ???? ?? ?????? ???????? ?? = ????&??????®???? ????????: ??? ?????????????????·???), ?????? ?? ?? ???? ??????????????(??