Languages of the European Union languages, Latvian and Lithuanian; the Celtic languages, including Irish; and Greek are also Indo-European. Outside the Indo-European family, Estonian, Finnish, and Hungarian are Uralic languages while Maltese is the only Afroasiatic language with official status in the EU. The Basque language, a language isolate whose roots are unknown, is an official language in some parts of northern Spain, but not an official language of the EU. Most official EU languages are written in the Latin script. The two exceptions are Greek, which is written in the Greek script, and Bulgarian, which is written in Cyrillic script. With the accession of
Indo-Uralic languages to their south or west, including possibly their words for "ox", "*gʷou-" (compare English "cow") and "grain", "*bʰars-" (compare English "barley"). In contrast, basic vocabulary – words such as "me", "hand", "water", and "be" – is much less readily borrowed between languages. If Indo-European and Uralic are genetically related, they should show agreements in basic vocabulary, with more agreements if they are closely related, fewer if they are less closely related. Advocates of a genetic relation between Indo-European and Uralic maintain that the borrowings can be filtered out by application of phonological and morphological analysis and that a core of