Language name and locationː Yoba, Papua New Guinea [Refer to Ethnologue]
语言名称和分布地区: 约巴语, 巴布亚新几内亚中部省南部Magori 语以北内陆地区

1. kanakano

2. kanakanewaka / buau

3. aiteri  (borrowed from Magi ?)

4. vati

5. ima (lit: 'hand') 

6. ima reria kana (5 + 1)

7. ima reria buau (5 + 2)

8. ima reria aiteri (5 + 3)

9. ima reria vati   (5 + 4)

10. nanaukana  ('nanau' < Magi)

Linguist providing data and dateː Dr. Tom E. Dutton, Department of linguistics, The
Australian National University, Canberra, Australia, June 8, 1988.
提供资料的语言学家: Dr. Tom E. Dutton, 1988 年 6 月 8 日.

Other comments: Yoba is an extinct language formerly spoken in Central province of Papua New Guinea, north of Magori, The last speaker probably survived into the 1980s (Dutton 1976). Yoba may have a quinary counting system. Numeral 5 is the word for 'hand', and the existence of a distinct numerals 10, 'nanau', conceivably borrowed from Magi.