Ключевые слова: address, anniversary, bill, business, card, celebration, communication, concept, congratulation, copy space, correspondence, delivery, design, document, email, europe, european, european union, european union flag, exchange, green, greeting, investment, invitation, leaves, letter, letter of happiness, mail, massage, message, modern, national, national holiday, nationality, notebook, paper, payment, pen, pictogram, post office, postage, postcard, registration, relaxing, retro postage, spa, symbol, tourism,