In Inner Mongolia, official language policy divides the Mongolian language into three dialects: Southern Mongolian, Oirat, and Barghu-Buryat. Southern Mongolian is said to consist of Chakhar, Ordos, Baarin, Khorchin, Kharchin, and Alasha. The authorities have synthesized a literary standard for Mongolian in whose grammar is said to be based on Southern Mongolian and whose pronunciation is based on the Chakhar dialect as spoken in the Plain Blue Banner. Dialectologically, however, western Southern Mongolian dialects are closer to Khalkha than they are to eastern Southern Mongolian dialects: for example, Chakhar is closer to Khalkha than to Khorchin.