Ключевые слова: 19, board, business, compulsory, corona, coronavirus, covid, covid19, customer, distance, distancing, entrance, felt, grocery, hairdresser, hospital, letters, mask, masks, message, necessary, notice, obligatory, personal, pink, please, ppe, prevention, preventive, protection, protective, public, required, requirement, restriction, retail, safety, school, shop, shopping, sign, social, store, text, virus, warning, wear, wearing, workers,