The phrase (literally "Look, hey!") is the title of a famous textbook, Kato hei: Puhekielen alkeet , designed to teach foreigners spoken Finnish (puhekieli). The Evolution of Spoken Finnish
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: The book provides insights into spoken features like the dropping of letters (e.g., ) and the use of shorter pronouns (e.g., Audio Companion kato hei pdf
: Personal pronouns, basic verbs, and question suffixes in spoken form. Chapter 3-4 The phrase (literally "Look, hey