This should not be a alt text description. Tactile is needed.....Four tessellations.One tessellation has groups repeating rows of two rectangles. The first row has yellow and green alternating rectangles and the second row has blue and red alternating rectangles. Another tessellation has alternating blue and red alternating rectangles slanted upward and to the right. Below the red and blue rectangles are alternating yellow and green rectangles.  A third tessellation has groups of three rectangles next to one another, sharing the long sides: the long sides are vertical. In addition to these groups of three rectangles, there are single rectangles with the long side lying horizontally. A fourth tessellation has alternating rectangles placed horizontally then vertically.
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