Ключевые слова: attention, barricade, barrier, basketball, caution, close, closed, conceptual, construction, cordon, corona, coronavirus, court, covid19, crime, danger, dangerous, disease, entry, epidemic, fencing, forbidden, hazard, health, infection, investigation, line, lockdown, outbreak, pandemic, pass, police, precaution, prevention, prohibited, protect, protection, quarantine, restricted, restriction, ribbon, risk, safety, security, sign, sport, stop, virus, warning,