Ключевые слова: address, anniversary, bill, business, card, carribbean, carribbean island flag, celebration, communication, concept, congratulation, copy space, correspondence, delivery, design, document, email, 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, puerto rico, puerto rico flag, registration, relaxing, retro postage, spa, symbol, tourism,