text: console.log("2D array");
  
  const myMatrix = [
      [1, 2, 3],
      [4, 5, 6],
      [7, 8, 9],
  ]
  
  for (let indexRow = 0; indexRow < myMatrix.length; indexRow++) {
      for (let indexColumn = 0; indexColumn < myMatrix[indexRow].length; indexColumn++) {
          const element = myMatrix[indexRow][indexColumn];
          process.stdout.write(element.toString());
      }
      console.log("");
  }