17.2 79 51.1 33.2 33.1 Drawing 4 Drawing 3 Drawing 2 I H G F 42 43 41.1 41 40 39 36 26 18 17 25 24 22 23 28 27 20 15 21 31 29 33 50 51 52 35.1 35 35.2 26 37 32.1 41.2 34 32 58 49 64 70.2 70.3 70 72 84 83 82 81 80 78 12 9 Drawing 1