Ключевые слова: abbreviation, announce, announcement, ask, asking, assistance, attention, background, block, blocks, blue, communication, concept, conception, cubes, danger, dangerous, emergency, flat, help, helping, idea, inscription, lay, letters, life, light, made, message, news, prevention, protection, rescue, safe, safety, save, security, signboard, sos, souls, support, survival, symbol, text, top, view, warning, word, yellow,