Possessive affixes are found in many languages of the world. The "World Atlas of Language Structures" lists 642 languages which have possessive suffixes, possessive prefixes, or both, out of a total sample of 902 languages. Possessive suffixes are found in some Austronesian, Uralic, Altaic, Semitic, and Indo-European languages. Complicated systems are found in the Uralic languages; for example, Nenets has 27 (3×3×3) different types of forms distinguish the possessor (first, second, third person), the number of possessors (singular, dual, plural) and the number of objects (singular, dual, plural). That allows Nenets-speakers to express the phrase "we two's many houses" in one word. Mayan languages and Nahuan languages also have possessive prefixes.