Ключевые слова: abstract, aid, announcement, background, barrier, billboard, black, blackboard, blank, board, boards, brown, clean, color, conceptual, desperation, draw, education, elementary, fence, frame, graffiti, grain, green, help, knotty, learn, lecture, lettering, menu, message, ochre, old, paint, pine, planks, reading, reminder, school, stress, studying, teacher, teaching, text, texture, wooden, write,