▁This ▁stock ▁is ▁spoken ▁in ▁a ▁wide ▁distribution ▁of ▁non - central ▁Brazil ; ▁Mac ro - G ê ▁is ▁also ▁popular ▁in ▁the ▁eastern , ▁northern , ▁and ▁central , ▁and ▁south western ▁parts ▁of ▁the ▁country , ▁as ▁well ▁as ▁being ▁distributed ▁in ▁nearby ▁Boliv ia , ▁Par agu ay , ▁and ▁Argentina , ▁but ▁the ▁J ê ▁family ▁is ▁its ▁only ▁remaining ▁large ▁subgroup , ▁with ▁other ▁languages ▁remaining ▁in ▁isol ates ▁due ▁to ▁ext inction . ▁Within ▁J ê , ▁its ▁ 1 6 ▁languages ▁are ▁distributed ▁in ▁four ▁divisions ; ▁northern , ▁north - e astern , ▁central , ▁and ▁southern , ▁and ▁are ▁better ▁preserved ▁than ▁other ▁languages ▁in ▁the ▁stock ▁due ▁to ▁its ▁in land - in hab iting ▁speak ers . ▁X av ante ▁is ▁class ified ▁in ▁the ▁central , ▁alongside ▁X er ente , ▁X ax ri aba , ▁and ▁Ak ro a . ▁The ▁stock ▁is ▁marked ▁by ▁a ▁large ▁presence ▁of ▁nas al ▁v ow els , ▁this ▁also ▁being ▁marked ▁in ▁the ▁proto - ▁J ê ▁re construct ed ▁language . ▁Cons on ant ▁invent ories ▁of ▁the ▁Mac ro - Ge ▁stock ▁are ▁of ▁medium ▁size , ▁with ▁X av ante ▁histor ically ▁under going ▁a ▁ph on ological ▁change ▁from ▁vel ar ▁con son ants ▁to ▁gl ott al ▁stops . ▁All ▁are ▁m ild ly ▁synth etic , ▁without ▁complex ▁morph ology , ▁and ▁have ▁SV ▁constitu ent ▁orders . ▁ ▁Eth n ograph ies ▁The ▁X