total 3. first one person good. next image looks like L symbol
page6-100.png page3-153.png page8-157.png
page7-59.png page8-157.png page6-100.png page8-190.png page2-140.png page1-112.png page4-239.png page2-103.png page3-74.png page3-153.png
page3-153.png
good. last one arch