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[('supply', 'supply'), ('vector', 'vector'), ('teacher', 'teacher'), ('ep', 'ep'), ('icon', 'icon'), ('bulb', 'bulb'), ('compas', 'compas'), ('blackboard', 'blackboard'), ('window', 'window'), ('clas', 'clas'), ('element', 'element'), ('graphic', 'graphic'), ('student', 'student')]