sentences:  Its best known literary form is the Karakhanid (also called Khaqani Turkic) dialects spoken in Kashgar, Balasaghun and other cities along the Silk Road.The literary language of the Chagatai Khanate is considered a later form of Middle Turkic.Confusingly, the Karluk and Oghuz "Middle Turkic" period overlaps with the East Turkic Old Turkic period, which covers the 8th to 13th centuries.