The number systems of Indo-European and Uralic show no commonalities. Moreover, while the numbers in all Indo-European languages can be traced back to reconstructed Proto-Indo-European numbers, this cannot be done for the Uralic numbers, where only "two" and "five" are common to all of the family (roots for 3-6 are common to all subgroups other than Samoyedic, and slightly less widespread roots are known for 1 and 10). This would appear to show that if Proto-Indo-European and Proto-Uralic are to be related, the connection must lie so far back that the families developed their number systems independently and did not inherit them from their purported common ancestor. Although, the fact that Uralic languages themselves do not share the same numbers across all Uralic branches indicates that they would not with Indo-European languages in any case, even if they were in fact related.