D and E seems parallel but are not
The single family houseconstructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape, its framework of poles overlaid with slabs of bark, either cedar or pine,AND banked with dirt to a height of three to four feet.
The secondAND marked in large red is not introducing another clause but it rather just demarcating the different characteristics of the framework of the poles that were covered in bark and cemented
...
The single family house
The secondAND marked in large red is not introducing another clause but it rather just demarcating the different characteristics of the framework of the poles that were covered in bark and cemented
...

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