From the discussion here: https://www.ravelry.com/discuss/stitch-maps/4284892/
(I'm mapping only twenty stitches: BO71 makes the map a lot wider in an area that's pretty straightforward.)
Shown with a cast-on count of 20 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats