Another variation of paired comparison is the Bubble Sort. This is a quick and easy method which can be performed as follows:
a.Write each item to be prioritized on a 3" x 5" card, then place the cards one above another in a vertical column.
b.Compare the top two cards to determine which is the most important. If the lower card is more important, then exchange the positions of the cards. This will result in the more important card being positioned above the less important card.
c.Repeat this pairwise comparison and exchange for the second and third card, then third and fourth card and so on until the bottom of the column is reached.
d.If any cards have been moved during steps (b) and (c), repeat the process for the whole column, starting again with the top two cards, as in step (b).
e.Keep repeating the overall process until no cards are exchanged during a complete pass through the column. The cards are now in priority order.