19-22 20-21 22-23 23-26 24-25 26-27 27-30 28-29 30-31 31-34 32-33 34-35 34-38 35-38 36-37 37-39 38-42 39-42 40-42 41-43 42-46 43-45 43-46 44-45,5 44-46 46-48 46-50 47-49 47-50