К вопросу о словоизменительных разрядах русского глагола

This article is devoted to the classification of the verb forms of the Russian language. The article presents inflectional categories in the form of classes, subclasses and groups, on the basis of which the system of the Russian verb can be demonstrated. The question of the process of verbal inflection (derivation of word-forms, paradigm, conjugation) is also touched upon. The article presents two ways of classification of the Russian verb. V.V. Vinogradov defines productive classes and unproductive groups, more precisely, he distinguishes 5 productive classes and 17 unproductive groups. It should be noted that the last 6 unproductive groups acquire the character of isolation, therefore, basically, they can be considered a transitional link in the direction of already completely isolated verbs, which are listed separately. The group of authors of "Russian grammar" edited by N.Yu. Shvedova presents the system of the Russian verb in the form of 10 inflectional classes, the main classification criterion of which is a strict ratio of the foundations of the past and present tense. Isolated verbs also stand out separately. Complex classification emphasize the meaning of the verb as the central part of speech, which entails a wide range of numerous forms and the relatively great difficulty of a uniform classification.