1-4 5-7 8-10 11-13 14-16 17-19 20-22 23-25 26-28 29-31 32-34 35-37 38-40 41-43 44-46 47-49 50-52 53-55 56-58 59-61 62-64 65-67 68-70 71-73 74-76 77-79 80-82 83
