East Katuic
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- Katu, Eastern
- ISO 639-3: ktv, Eastern Katu is spoken in Vietnam.
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- Katu, Western
- ISO 639-3:kuf, Western Katu is spoken in Laos.
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- Ngeq
- ISO 369-3: ngt, Ngeq is also known as Nkriang.
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- Trieng
- ISO 639-3:tgr