Mednyj Aleut

Mednyj Aleut (also called Copper Island Creole or Copper Island Aleut) is an extinct mixed language spoken on Bering Island. Mednyj Aleut is characterized by a blending of Russian and Aleut (primarily Attu) elements in most components of the grammar, but most profoundly in the verbal morphology. The Aleut component comprises the majority of the vocabulary, all the derivational morphology, part of the simple sentence syntax, nominal inflection and certain other grammatical means. The Russian components comprise verbal inflection, negation, infinitive forms, part of the simple sentence syntax and all of the compound sentence syntax.

From Wikipedia · Mednyj Aleut language · CC BY-SA 4.0