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
Finnic languages harmony (lost in Livonian, generally also in Estonian and Veps) is also an important process. Historically, the "erosion" of word-final sounds (strongest in Livonian, Võro and Estonian) may leave a phonemic status to the morphophonological variations caused by the agglutination of the lost suffixes, which results in three phonemic lengths in these languages. The original Uralic palatalization was lost in proto-Finnic, but most of the diverging dialects reacquired it. Palatalization is a part of the Estonian literary language and is an essential feature in Võro, as well as Veps, Karelian, and other eastern Finnic languages. It is also found in