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  === Duolingo course ===
  On  a course in High Valyrian for English speakers began to be constructed in the Duolingo Language Incubator. David J. Peterson is one of the contributors to the course. The beta version was released on July 12, 2017. In April of 2019, the course was updated in anticipation of Game of Thrones' eighth and final season. As a part of this update, Peterson created audio for the course's lessons and exercises.