Ключевые слова: address, anniversary, bill, business, card, 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, registration, relaxing, retro postage, spa, symbol, tourism, tuvalu, tuvalu flag, tuvaluan, tuvaluan flag,