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
Uralic languages three families where gradation "is" found) is noted by Helimski (1995): an original allophonic gradation system between voiceless and voiced stops would have been easily disrupted by a spreading of voicing to previously unvoiced stops as well. A computational phylogenetic study by Honkola, et al. (2013) classifies the Uralic languages as follows. Estimated divergence dates from Honkola, et al. (2013) are also given. Structural characteristics generally said to be typical of Uralic languages include: Basic vocabulary of about 200 words, including body parts (e.g. eye, heart, head, foot, mouth), family members (e.g. father, mother-in-law), animals (e.g. viper, partridge, fish), nature