THE SYSTEM OF PAST TENSE FORMS IN THE OLD RUSSIAN IZBORNIK OF THE XIII<sup>th</sup> CENTURY
The article is devoted to the study of the system of preterital forms in the handwritten Old Russian Izbornik of the first half of the 13th century (LNR, Q. п. I. 18). The analysis of past tense forms in Izbornik in this article is presented for the first time. The study showed an unusual distribution of preterital forms in this unique in its composition manuscript.