What is the process of using a decision tree to implement the insertion sort algorithm on a list containing four elements?

To implement the insertion sort algorithm on a list with four elements using a decision tree, you would start by comparing the first two elements and swapping them if necessary. Then, you would compare the third element with the first two and place it in the correct position. Finally, you would compare the fourth element with the first three and insert it in the appropriate spot. This process continues until all elements are in sorted order.