könyvben
könyvben is a Hungarian locative form of the noun könyv (book) that means “in the book.” It is formed by adding the locative suffix -ben (with -ban after back vowels) to the noun, in accordance with vowel harmony. Because the stem vowel of könyv is ö, the correct form is könyvben, used to indicate location inside or within the book.
In usage, könyvben can refer to a literal location (inside the physical book) as well as a
Könyvben is part of a broader system of Hungarian locative forms, which express location with different case
See also: Hungarian locative case, -ban/-ben suffix, vowel harmony.