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Opening Paragraph Within the Nilo-Hamitic group of tribes in East Africa is a sub-group, the tribes of which speak closely related dialects. So close are these dialects that a native speaker of any one can understand a speaker of any other. In the normal intercourse between the peoples this does in fact happen constantly. Linguistically this group of dialects might be called the Teso Dialect Cluster, after the tribe of that name.
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P. H. Gulliver (1952) studied this question.
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