Tällaisissa
Tällaisissa is the inessive plural form of the Finnish demonstrative adjective tällaISTA/tällaistä, commonly written as tällaista or tällaisten? It is derived from the word tällaista meaning “such” or “this kind of.” In everyday Finnish, tällaista/tällainen indicates a kind or type, and tullaisissa is the form used when referring to multiple items or situations in which that kind applies.
Usage and grammar: Tällaisissa is an adjective-like form that accompanies plural nouns in the inessive case,
Relation to other forms: tällaista (partitive singular), tällainen (nominative singular), tällaista (partitive), tällaiset (nominative plural), tällaista?