Ключевые слова: address, background, box, building, check, city, communicate, communication, correspondence, deliver, delivery, detail, domestic, grey, house, inside, key, letter, letterbox, living, lock, mail, mailbox, message, metal, multiple, new, newspaper, normal, object, post, postage, postal, postbox, postman, receive, receiving, reception, rectangle, residence, residential, residents, security, send, service, shipping, slot, typical, urban, wall,