Ключевые слова: air, airmail, background, bunch, business, circle, circular, class, colors, commerce, communication, correspondence, document, economy, envelope, european, fragile, freight, germany, italy, label, letter, mail, mailbox, meter, paper, post, postage, postmark, priority, red, send, sender, ship, shipping, sign, stained, stamp, stationery, symbol, template, texture, transport, transportation, write, writer,