Blame for kit/book/visual_2.obj

# https://github.com/mikedh/trimesh
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f 1//1 77//77 81//81
f 1//1 81//81 4//4
f 4//4 81//81 90//90
f 4//4 90//90 11//11
f 10//10 89//89 79//79
f 10//10 79//79 2//2
f 96//96 21//21 31//31
f 96//96 31//31 99//99
f 99//99 31//31 24//24
f 99//99 24//24 106//106
f 105//105 23//23 20//20
f 105//105 20//20 97//97
f 39//39 115//115 77//77
f 39//39 77//77 1//1