This is like a block style letter L with the bottom part
page3-157.png page7-13.png page4-162.png
page3-157.png page1-171.png page4-203.png page3-189.png page1-116.png page7-13.png page4-227.png page2-76.png page2-152.png page4-162.png
perfect! Now let's choose the fat diamond that has three triangle points under it on the bottom