Colognian grammar describes the formal systems of the modern Colognian language or dialect cluster used in Cologne currently and during at least the past 150 years. It does not cover the Historic Colognian grammar, although similarities exist. Colognian has verbal conjugation and nominal declension. The Colognian declension system marks nouns, pronouns, articles, and adjectives to distinguish gender, case, and number. There are the three grammatical genders called feminine, masculine, and neuter, and a special case most often treated as exceptions of neuter. Like the German declension, the Colognian declension system does not mark grammatical gender for its plural forms; plural can thus be treated similar to another gender in it formalism. Five grammatical cases are distinguished: nominative, genitive, dative, accusative, and vocative. Genitive has two variants, either of which can also be described as expressions using dative. Number is either singular or plural in declension. The Colognian conjugation system has a few hundred individual types of grammatical conjugations, which mark verbs to distinguish person, number, voice, aspect, tense, mood, modality, etc. Colognian basic verbs are classified as strong, weak, or irregular. Independently, there are composite verbs, which are classified as either separable or inseparable. Colognian also has modal verbs and auxiliary verbs, each forming grammatical classes of their own. There are three persons, 1st person, 2nd person, and 3rd person. Number is either singular or plural in conjugations. Grammatical voice can be active, passive, or reflexive. Colognian has indicative and conjunctive moods, and there are also imperative and energetic mood, inferential and renarrative, none of which is completely developed. The aspects of Colognian conjugation include unitary-episodic, continuous, habitual-enduring, and gnomic. In Colognian, grammatical tense can be present tense, preterite tense or past tense, simple perfect or present perfect, past perfect tense, completed past perfect tense, simple future tense, or perfect future tense. Case system Colognian distinguishes the four grammatical cases nominative, genitive, dative, and accusative. The genitive has two variants, both of which are compounds or expressions. Colognian is a nominative–accusative language, more precisely a nominative–accusative–dative language. Nominative Nominative is the basic form of nouns, etc. It is used to mark the subject or agent in a clause, the verb of which is in the active voice. It marks the subject or patient in a clause, the verb of which is in the passive voice. Genitive The two variants of the genitive are compounds. They both contain declined forms identical