Ключевые слова: 13, 13th, abstract, agenda, appointment, background, badge card, black, calendar, celebrate, color, concept, date, day, days, deadline, decoration, design, element, event, flat, friday, friday 13, graphic, greeting, icon, illustration, isolated, line, media, meeting, misfortune, monthly, number, outline, pattern, pictogram, plan, planner, planning, schedule, sign, social, square, symbol, template, week day, year,