Ключевые слова: alphabet, background, blue, blues, boredom, business, caution, concept, conceptual, coronavirus, covid, covid19, creative, cube, depression, emotion, epidemic, health, hygiene, idea, infection, information, isolation, letter, level, lockdown, lockdown blues, message, nobody, pandemic, phrase, prevent, prevention, protection, quarantine, sad, sadness, sick, sign, stay at home, stay home, text, the blues, tier, viral, virus, wood, wooden, word,