Mock rib: 3x1

Cast on with waste yarn, putting every fourth needle out of work. Complete as for 1x1 mock rib.

Mock rib: 2x1

Cast on in waste yarn, with every third needle out of work. Complete as for 1x1 mock rib.

Mock rib: 1x1

Cast on EON (Every Other Needle) with waste yarn and knit a few rows, and then knit 1 row ravel cord. Knit required depth of rib at MT, and 1 row MT+2, followed by depth of rib again. Bring all needles into work.

Hang first row of knitting onto empty needles and knit 1 row.

Note: mock rib is not as stretchy as real rib.