15 16-17 18-23 22-24 23-26 25-27 27-30 28-30 30-34 31-33 31-34 34-36 34-38 35-38 36-42 37-39 38.5-40.5 38-42 40-42 40-43 42-46 43-45 44-47 46-48 46-50 47-50 49-51 51-54 52-54