To really see a difference try a swatch of say 40 stitches.
Row "A" - k8, p8, k8, p8, k8
Row "B" - p8, k8, p8, k8, p8
alternate row A and B until you have enough to see....
The "right" side will have three columns of stockinette divided by two columns of reverse stocking stitch.
The "wrong" (or "private" side) will have two columns of stocking stitch between three columns of reverse stockinette.