Cartridge Belt Rib
(Worked over a multiple of 4 stitches plus 3.)
Row 1 (RS): *Knit 3, sl 1 wyif; rep from * to last 3 sts, k 3.
Row 2 (WS): Knit 1, sl 1 wyif, k 1, *k 2, sl 1 wyif, k 1; rep from * to end.
Repeat Rows 1 and 2 for Rib.
About Cartridge Belt Rib: A simple slip stitch pattern that looks like ribbing without the purls.