▁di ph th ongs ▁of ▁early ▁Class ical ▁Pers ian ▁" aw " ▁( as ▁" ow " ▁in ▁Eng l . ▁" cow ") ▁and ▁" ay " ▁( as ▁" i " ▁in ▁English ▁" ice "), ▁which ▁are ▁pron ounced ▁ ▁( as ▁in ▁Eng l . ▁" low ") ▁and ▁ ▁( as ▁in ▁English ▁" day ") ▁in ▁Iran ian ▁Pers ian . ▁D ari , ▁on ▁the ▁other ▁hand , ▁is ▁more ▁arch a ic , ▁e . g . ▁ ن و ر و ز ▁' Pers ian ▁New ▁Year ' ▁is ▁realized ▁as ▁ ▁in ▁Iran ian ▁and ▁ ▁in ▁Afghan ▁Pers ian , ▁and ▁ ن خ ی ر ▁' no ' ▁is ▁ ▁in ▁Iran ian ▁and ▁ ▁in ▁Afghan ▁Pers ian . ▁Moreover , ▁ ▁is ▁simplified ▁to ▁ ▁in ▁normal ▁Iran ian ▁speech , ▁thereby ▁mer ging ▁with ▁the ▁short ▁v owel ▁ ▁( see ▁below ). ▁This ▁does ▁not ▁occur ▁in ▁Afghan ▁Pers ian . ▁ ▁The ▁high ▁short ▁v ow els ▁ ▁and ▁ ▁tend ▁to ▁be ▁lower ed ▁in ▁Iran ian ▁Pers ian ▁to ▁ ▁and ▁, ▁unlike ▁are ▁in ▁D ari ▁where ▁they ▁might ▁have ▁both ▁high ▁and ▁lower ed ▁allo ph ones . ▁ ▁The ▁pron unci ation ▁of ▁the ▁lab ial ▁con son ant ▁( و ), ▁which ▁is ▁realized ▁as ▁a ▁vo iced ▁lab iod ental ▁fr ic ative ▁, ▁but ▁Afghan ▁Pers ian ▁still ▁retain s ▁the ▁( class ical ) ▁bil ab