The morphological abstraction of Russian verbs

1. The purpose of this paper is the establishment of classes of verbals according to the morphemic alternations of base-form finals; 2. Verbals which are subject to morphemic alternation are treated as single entries instead of as multiple entries; 3. The patterns of compatibility between a given set of compound suffixes and a class of verbal bases are designed to be suitable whether used as input for translation from Russian or as output during translation to Russian; 4. The proposed procedure is flexible; it can be modified or added to without any change in the logical structure; 5. This procedure can be applied to other Slavic languages as well.