Ключевые слова: address, anniversary, bill, business, card, celebration, communication, concept, congratulation, copy space, correspondence, delivery, design, document, email, exchange, foliage, freshness, greeting, harmony, healthy, holding, idea, investment, invitation, lifestyle, mail, message, modern, national, national holiday, nationality, natural, ornamental, payment, pictogram, post, postage, registration, relaxation, relaxing, sanaa, serenity, symbol, yemen, yemen flag, yemeni, yemeni flag,