Languages by language family/Nilo-Saharan

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Nilo-Saharan languages (?)

Note: The language groups marked with (?), including the Nilo-Saharan family itself, are those most frequently described and proposed today, but they are still uncertain because some groups may eventually belong to another family.
Saharan-Songhai languages (?):
Eastern Sudanic-Berta-Fur languages (?):
Central Sudanic-Kadu-Maba-Kunama languages (?):
Central Sudanic-Kadu languages (?):