Almost 2 trillion ways to lace up your shoes?

Apparently, there are 1,961,990,553,600 ways to feed a shoelace through 12 eyelets...look at the formula through this link!

http://www.fieggen.com/shoelace/2trillionmethods.htm

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:

'

Ladder Lacing
This distinctive lacing is worn on military boots by paratroopers and ceremonial guard units. The laces weave horizontally and vertically, forming a secure "ladder".'

Link up: http://www.fieggen.com/shoelace/lacingmethods.htm

On the page, click on the picture for the instructions.

Perhaps different types each week?