Armed with the knit stitch and purl stitch, you can make a whole slew of knitted textures! One such technique is ribbing, or those stretchy vertical stripes on fabric, often found on the cuffs of sweaters or the necks of turtlenecks. When looking at the picture above, notice that the columns alternate between knit stitch (shaped like 'v's) and purl stitch (horizontal bars). In each rib, there are two side-by-side v's, meaning that the rib is two stitches wide. This is called a 2x2 rib, because there are 2 knit, 2 purl stitches. 2x2 rib: 1. Cast on a multiple of four stitches (e.g. 8, 12, 16, etc) 2. Knit 2, purl 2, repeat until the end of the row. Turn. 3. Purl 2, knit 2, repeat until the end of the row. 4. Repeat 2 and 3 until casting off.