where N is the number of languages being compared. When completed, this table is half-filled in triangular form. The higher the proportion of cognacy the closer the languages are related.

Create family tree

Creation of the language tree is based solely on the table found above. Various sub-grouping methods can be used but that adopted by Dyen, Kruskal and Black was:
* all lists are placed in a pool
* the two closest members

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