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