Essapäätteistä
Essapäätteistä is a Finnish grammatical phenomenon involving the addition of the suffix -ssä or -ssä to nouns. This suffix indicates the inessive case, which translates to "in" or "inside" in English. The choice between -ssä and -ssä depends on vowel harmony rules within the Finnish language. If the preceding vowel is a front vowel (ä, ö, y), the suffix -ssä is used. If the preceding vowel is a back vowel (a, o, u), the suffix -ssä is used.
For example, the word "talo" (house) becomes "talossa" (in the house) because "a" and "o" are back