▁P ano an ▁languages ▁are ▁still ▁spoken ▁today , ▁six ▁of ▁which ▁are ▁falling ▁out ▁of ▁every day ▁use . ▁It ▁is ▁the ▁fifth ▁largest ▁language ▁family ▁in ▁South ▁America , ▁with ▁speak ers ▁of ▁P ano ▁languages ▁living ▁in ▁Perú , ▁Brazil , ▁and ▁Boliv ia . ▁Within ▁the ▁P ano ▁language ▁family , ▁Mat is ▁language ▁lies ▁on ▁the ▁Mayor una ▁branch ▁along ▁with ▁three ▁other ▁ext ant ▁and ▁four ▁ext inct ▁languages . ▁Mat is ▁is ▁the ▁most ▁lingu ist ically ▁diver gent ▁ext ant ▁language ▁in ▁the ▁Mayor una ▁branch . ▁ ▁Due ▁to ▁the ▁mut ual ▁intellig ibility ▁of ▁many ▁P ano ▁languages , ▁most ▁speak ers ▁of ▁Mat is ▁can ▁also ▁understand ▁languages ▁spoken ▁by ▁the ▁K ul ina , ▁M ats es ▁( May or una ), ▁and ▁the ▁Kor ub o . ▁The ▁Mar ub o ▁acted ▁as ▁interpre ters ▁between ▁the ▁Mat is ▁and ▁Fun ai ▁during ▁the ▁first ▁contacts ▁with ▁Fun ai ▁in ▁the ▁ 1 9 7 0 s . ▁ ▁Document ation ▁ ▁A ▁key ▁research er ▁and ▁publish er ▁of ▁many ▁works ▁on ▁Mat is ▁language ▁is ▁Vit ória ▁Regin a ▁Sp ang h ero ▁Fer re ira . ▁Her ▁master ’ s ▁th esis ▁was ▁a ▁ph on etic ▁and ▁ph on ological ▁description ▁of ▁Mat is ▁language ▁that ▁discussed ▁ph on emes ▁and ▁allo ph ones , ▁sy ll able ▁structure , ▁ph on ological ▁processes , ▁and ▁acc ent u ation ▁patterns ▁of ▁Mat is . ▁Fer