or
23 23 28 28 22 22 26 26 26 26 28 28 27 27 27 27 27 27 21 21 27 27 24 24 21 21 21 21 21 21 25 25 24 24 21 21 28 28 22 22 20 20 24 24 24 24 27 27 23 23 20 21 22 23 24 25 26 27 28 29 2 4 6 8 10 12 10% 20% 30% 40% 50%