Row 1: K1, P1
Row 2: K1,P 1 inserting the needle from the back to the front into the stitch below. They call it Purled Rib. I'm ok with that, but it's knitted in the round, and the second round calls for it in all the following consecutive rows. Wish I could email you the pattern, as it's a PDF. Anyways, On my first pair, I have been doing the foot in regular rib.