Language name and location: Tanggu, Papua New Guinea [Refer to Ethnologue ]

语言名称和分布地区: 唐古语, 巴布亚新几内亚马当省博吉亚区

1. nunuan

2. munai

3. munai nuan (2+1)

4. munai munai  (2+2)

5. haparaɡunuan (SIL data 1975)

10. hapar munai (SIL data 1975)

Linguist providing data and dateː Dr. Glen A. Lean, Department of Communications, Papua New Guinea University of Technology, Lae, Papua New Guinea, 1991.

Sourceː Glendon A. Lean. Counting systems of Papua New Guinea, volume 15, Madang Province Department of Mathematics and Statistics, Papua New Guinea University of Technology, Lae, Papua New Guinea, 1991.
提供资料的语言学家: Dr. Glen A. Lean, 1991 年.

Other comments: Tanggu is spoken by approximate;y 3,000 speakers in Bogia district, Mandang province, Papua New Guinea. Tanggu system is a digit-tally with the basic numeral set is (1, 2).  However, the SIL data (1975) has 'hapar+one' for 5 and 'hapar+2 for 10, thus implying the operation of a 5-cycle. New data needed to compare with the old one.