▁classification ▁of ▁E . ▁R . ▁Ten is he v ▁is ▁based ▁on ▁four ▁parameters : ▁the ▁quality ▁of ▁the ▁ph on eme ▁/ i /, ▁met aph ony , ▁con son ant ▁assim ilation ▁and ▁the ▁conjug ation ▁of ▁ver bs ▁in ▁the ▁future ▁t ense . ▁M . ▁Os man ov ▁on ▁the ▁other ▁hand ▁has ▁based ▁his ▁classification ▁on ▁two ▁different ▁parameters : ▁the ▁conjug ation ▁of ▁the ▁present - f uture ▁t ense ▁and ▁the ▁form ▁of ▁the ▁imper fect ▁partici ple . ▁ ▁The ▁Central ▁dialect s ▁are ▁spoken ▁by ▁ 9 0 % ▁of ▁the ▁U yg h ur - spe aking ▁population , ▁while ▁the ▁two ▁other ▁branches ▁of ▁dialect s ▁only ▁are ▁spoken ▁by ▁a ▁relatively ▁small ▁minor ity . ▁ ▁Standard ▁languages ▁ ▁There ▁are ▁two ▁standard ▁languages ▁of ▁the ▁U yg h ur ▁language ▁in ▁use ▁which ▁can ▁be ▁seen ▁below . ▁▁ ▁Standard ▁X in ji ang ▁U yg h ur : ▁U sed ▁primarily ▁in ▁X in ji ang ▁ ▁Standard ▁Soviet ▁U yg h ur : ▁U sed ▁primarily ▁in ▁Kaz akh stan ▁ ▁The ▁first ▁is ▁the ▁standard ▁language ▁used ▁in ▁X in ji ang ▁and ▁is ▁based ▁upon ▁the ▁Northern ▁Central ▁dialect ▁of ▁Ü r ü m qi , ▁while ▁the ▁second ▁is ▁the ▁standard ▁language ▁used ▁primarily ▁in ▁Kaz akh stan ▁and ▁is ▁based ▁upon ▁the ▁Northern ▁Central ▁dialect ▁of ▁I li . ▁Notice ▁that ▁although ▁the ▁Soviet ▁Union ▁no ▁longer ▁exists , ▁the ▁label ▁" S