pernisiöön
Pernisiöön is a fictional locality commonly used in Finnish-language educational materials to demonstrate the illative case. The form combines a constructed place name, Pernisiö, with the illative suffix -öön to indicate motion toward the place.
Its purpose is linguistic rather than geographical: it serves as a neutral, easily analyzable example of how
In usage, Pernisiöön appears in classroom sentences such as "Menen Pernisiöön" (I am going to Pernisiö). It
Because it is fictional, Pernisiöön is occasionally discussed in linguistic literature as a placeholder to illustrate
See also: Finnish illative case; Finnish grammar; toponyms; placeholder names in linguistics; language pedagogy.