2 x 2 Ribbing (multiple of 4 stitches plus 2):
Row 1 (RS): *Knit 2, purl 2; repeat from * to final 2 stitches, knit 2.
Row 2 (WS): *Purl 2, knit 2; repeat from * to final 2 stitches, purl 2.
Row 1 (RS): *Knit 2, purl 2; repeat from * to final 2 stitches, knit 2.
Row 2 (WS): *Purl 2, knit 2; repeat from * to final 2 stitches, purl 2.