Uralic languages the loss of *x and alteration of *ï. Finnish has even preserved old Indo-European borrowings relatively unchanged as well. (An example is "porsas" ("pig"), loaned from Proto-Indo-European "*porḱos" or pre-Proto-Indo-Iranian "*porśos", unchanged since loaning save for loss of palatalization, *ś > s.) The Estonian philologist Mall Hellam proposed cognate sentences that she asserted to be mutually intelligible among the three most widely spoken Uralic languages: Finnish, Estonian, and Hungarian: However, linguist Geoffrey Pullum reports that neither Finns nor Hungarians could understand the other language's version of the sentence. No Uralic language has exactly the idealized typological profile of the family.
Uralic languages evidence of a number of extinct languages of uncertain affiliation: Traces of Finno-Ugric substrata, especially in toponymy, in the northern part of European Russia have been proposed as evidence for even more extinct Uralic languages. All Uralic languages are thought to have descended, through independent processes of language change, from Proto-Uralic. The internal structure of the Uralic family has been debated since the family was first proposed. Doubts about the validity of most of the proposed higher-order branchings (grouping the nine undisputed families) are becoming more common. A traditional classification of the Uralic languages has existed since the late 19th