Similarities have long been noted between the verb conjugation systems of Uralic languages (e.g. that of Finnish) and Indo-European languages (e.g. those of Latin, Russian, and Lithuanian). Although it would not be uncommon for a language to borrow heavily from the vocabulary of another language (as in the cases of English from French, Persian from Arabic, and Korean from Chinese), it would be extremely unusual for a language to borrow its basic system of verb conjugation from another. Supporters of the existence of Indo-Uralic have thus used morphological arguments to support the Indo-Uralic thesis by, for example, arguing that Finnish verb conjugations and pronouns are much more closely related to Indo-European than they would be expected to be by chance; and since borrowing basic grammar is rare, that this would suggest a common origin with Indo-European. (Finnish is preferred for this argument over Saami or Hungarian because it seems to be more conservative, i.e. to have diverged less than the others have from Proto-Uralic. But even then, similar suspicious parallels have been noted between Hungarian and Armenian verb conjugation.)