Ключевые слова: apartment, area, background, box, building, business, city, communication, construction, correspondence, delivery, domestic, entrance, envelope, gray, grey, home, house, housing, inside, interior, key, letter, lock, mail, mailbox, mailboxes, mailing, metal, multiple, number, office, paper, post, postage, postal, postbox, residence, residential, room, row, russia, security, send, service, set, sign, slot, wall, white,