Chechens
The main language of the Chechen people is Chechen. Chechen belongs to the family of Nakh languages (Northeast Caucasian languages). Literary Chechen is based on the central lowland dialect. Other related languages include Ingush, which has speakers in the neighbouring Ingushetia, and Batsbi, which is the language of the people in the adjoining part of Georgia. At various times in their history, Chechens used Georgian, Arabic and Latin alphabets; as of 2008, the official one is now the Cyrillic script of Russia.
Itelmens
Native peoples of Kamchatka (Itelmen, Ainu, Koryaks and Chuvans), collectively referred to as Kamchadals, had a substantial hunter-gatherer and fishing society with up to fifty thousand natives inhabiting the peninsula before they were decimated by the Cossack conquest in the 18th century. So much intermarriage took place between the natives and the Cossacks that "Kamchadal" now refers to the majority mixed population, while the term "Itelmens" became reserved for persistent speakers of the Itelmen language. By 1993, there were less than 100 elderly speakers of the language left, but some 2,400 people considered themselves ethnic Itelmen in the 1989 census. By 2002, this number had risen to 3,180, and there are attempts at reviving the language. According to the 2010 census, there were 3,193 Itelmen in Russia.