1  1.5  2  2.5  3  3.5  4  1  1.5  2  2.5  3  3.5  4  1  1.5  2  2.5  3  3.5  4
  2  2  2  2  2  2  2  3  3  3  3  3  3  3  4  4  4  4  4  4  4