Ключевые слова: alphabet, answer, background, block, business, choose, communication, concept, conceptual, control, copy, copy space, counseling, cube, design, economy, faith, free space, icon, idea, illustration, information, isolated, letter, management, medicine, message, no, option, protest, question, red, refuse, sign, success, successful, symbol, text, tree, up, vintage, virus, vote, warming, wooden, wooden blocks, wooden cubes, word,