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things that produce sound
things that produce sound energy
things that produce loud sounds
examples of things that produce soft sounds
things that can produce sounds
things that produce soft sounds
things that cannot produce sound
things that produce soft and loud sounds
things that produce sound, things that produce sound energy, things that produce loud sounds, examples of things that produce soft sounds, things that can produce sounds, things that produce soft sounds, things that cannot produce sound, things that produce soft and loud sounds
