Inflection verb, noun, adjective, and adverb, according to its function within a sentence and its relation to surrounding words. The Uralic languages are agglutinative, following from the agglutination in Proto-Uralic. The largest languages are Hungarian, Finnish, and Estonian—all European Union official languages. Uralic inflection is, or is developed from, affixing. Grammatical markers directly added to the word perform the same function as prepositions in English. Almost all words are inflected according to their roles in the sentence: verbs, nouns, pronouns, numerals, adjectives, and some particles. Hungarian and Finnish, in particular, often simply concatenate suffixes. For example, Finnish "talossanikinko" "in my house,
Finnish language "vesi" in standard Finnish. A feature of Finnic phonology is the development of labial and rounded vowels in non-initial syllables, as in the word "tyttö". Proto-Uralic had only 'a' and 'i' and their vowel harmonic allophones in non-initial syllables; modern Finnish allows other vowels in non-initial syllables, although they are uncommon compared to 'a', 'ä' and 'i'. Characteristic features of Finnish (common to some other Uralic languages) are vowel harmony and an agglutinative morphology; owing to the extensive use of the latter, words can be quite long. The main stress is always on the first syllable, and it is articulated