The case has been posited by Danish linguist Søren Wichmann for the Azoyú variety of the Tlapanec language, which seems to be the only natural language to use such a case.
Linguist Søren Wichmann from Denmark has suggested the use of a specific grammatical case in the Azoyú dialect of the Tlapanec language, which is believed to be the only instance of this particular case found in any natural language.