Takkeihin
Takkeihin is the illative plural form of the Finnish noun takki, meaning coat. In Finnish grammar, the illative case marks movement toward or into a location, and the plural illative form is used when the destination involves more than one item. Therefore takki becomes takkeihin when referring to entering, going into, or directing toward multiple coats.
The form takkeihin is built from the stem takki with the illative plural suffix -eihin, resulting in
Takkeihin is used in standard Finnish in both spoken and written language when coats are the objects