Hide The Knots

Copyright James A. Storer 2009; U.S. patent 8,393,623 March 2013.
(Cherry with nylon cord, 1.5 inches square by 19.5 inches long)

A cord with knots is attached to one end; thread it so that no knots show. Here are views of the solution, where the rope visits the holes in the order 4, 5, 1, 2, 7, 3, 6, 8, 11, 9, 10, 12: