Apparently, there are 1,961,990,553,600 ways (and counting!) to feed a shoelace through 12 eyelets...look at the formula through this link!
Oh yes, the website also demonstrates over 30 ways to thread your shoelaces through the eyelets for different purposes.
Here's one of them from the website: This distinctive lacing is worn on military boots by paratroopers and ceremonial guard units. The laces weave horizontally an