- ??? ????(????? ??)???? ?? ????????? ?? ???? ??.The two most popular grammatical ideas in which this happens is when conjugating prior to now or present tenses. For examples:- ???? ??: ??, ??, ??(??, ???????? ??), ??????, ??, ?????????????, ?? ?? ??, ?????? ?????????? ??????????????.??????????? /??/ ??  ???? ? ?? ?? ?? ????(??)???????? ?? ????: ?