Ключевые слова: arrive, await, background, box, clear, color, communication, concept, container, envelope, got, grey, inbox, inside, isolated, key, knob, letter, letterbox, lock, mail, mailbox, mailman, message, new, open, package, paper, post, postage, postal, postman, retrieve, send, service, set, shiny, ship, shipment, silver, stack, stamp, standard, text, white, wood, wooden,