Verbs are variable types of words that express action, state and happening. In this paper, the verb forms are analyzed in Kolajna written by Tin Ujević. Kolajna contains 48 poems of different lengths that make up a love canconiere. In these poems, the poet expresses his feelings of love and impatience, but in most of the poems a gloomy mood prevails because his beloved left him. Each chapter contains a theoretical part. These parts discuss the formation and use of certain verb tenses, modes, adjectives and nouns, and are based on the study and comparison of contemporary Croatian grammars. Verbal categories will also be presented. Verbal forms in Kolajna are singled out and their representation is shown graphically. Verb forms from the poems will be divided based on verb categories. So, the paper presents the division into deprecatable and non-deprecatable verb forms, the division into verb types and classes, the division by form into perfective, imperfective and double-faceted verbs. This is followed by the division of verb constructions in the active and passive states and the division with regard to transitivity, into transitive, intransitive and reflexive verbs. This presentation completes the individual presentation of verb forms, tenses, adjectives, adverbs and nouns. The aim of this paper is to present the Croatian verb system and to confirm the theoretical parts of the paper with examples from Kolajna and to explain the exceptions in the rules.