Khakas verbs- саын- "think" and сана- "count" and their parallels in other Turkic languages of Southern Siberia in the Mongolian language

The article is devoted to the description of two basic verbs with the meaning of intellectual activity сағын- «think» and сана- «count» in comparison to comparative coverage, which function in all Turkic languages of southern Siberia and Mongolian. By the example of the Khakass verb сағын- «think» 1) primary LSV associated with the generalized concept of «intellectual activity» is shown; 2) secondary LSV, losing connection with the basic concept and transforming into other semems.