40 variations of the Duolingo Incorrect Sound(echo returns))

Instructions

lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson lesson