Half Cable pattern?

I’ve been knittng the Blue Sky Alpacas Sweater Sock pattern and it has a “half cable pattern” for the leg of the sock. It looks terrible!! Does anyone have a pattern for a 3 stitch cable pattern? I know how to do 6 and 9 stitch cables, but not 3 stitch…SOMEBODY HELP ME PLEASE!!!

How about:

row 1: c3l
row 2: p3
repeat until desired length

C3L = Cable 3 Left Slip the next stitch onto cable needle and hold in front of work. Knit the next two stitches from the left-hand needle, then knit the stitch from the cable needle.