Ключевые слова: abstract, airmail, arrived, background, blank, box, brown, check, class, clean, cloud, color, communication, concept, contact, delivery, envelope, evergreen, fence, first, grass, hardwood, house, inbox, incoming, landscape, letter, letterbox, mail, mailbox, mailman, message, metal, mial, nature, news, nobody, object, old, outbox, outdoor, outgoing, paper, pattern, post, postal, postbox, poste, priority, receive, retro, road, roadside, row, send, sent, side, sign, steel, street, telegram, traditional, vintage, wall, white, wood, wooden, yellow,