Ключевые слова: abstract, background, best, black, blackboard, board, business, card, chalk, chalkboard, challenge, concept, conceptual, day, decoration, drawing, education, exam, exams, fortune, frame, good, greeting, handwritten, happiness, happy, health, isolated, job, luck, lucky, message, phrase, positive, school, sign, study, success, successful, symbol, test, text, texture, view, vintage, white, wood, word, work, write,