text: const MONTHS = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
  const YEARS = [2019, 2020, 2021];
  const PERIODS = [];
  
  YEARS.forEach((year) => {
    MONTHS.forEach((month) => {
      const period = `${year}-${month.toString().padStart(2, '0')}`;
      PERIODS.push(period);
    });
  });
  
  export default PERIODS;
  