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Saraveca is an extinct Arawakan language once spoken in Bolivia by the Sarave.[1][2] By 1962, most people has switched to Chiquitano.[3]
It is said[4][5] to be the only language with a numeral system based exclusively on five, although quinary systems exist. To some extent this is also an areal feature of other South American languages; many form their numbers 6–9 as "five + one", "five + two" and so on.
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