Wrong-side decreases that look right from the right side

When the chart shows a decrease in a row worked from the wrong side: how to make it look as drawn from the right side.

How to do it

1. Leaning right: purl 2 together. From the right side it looks like a k2tog.
2. Leaning left: swap two stitches on the left needle (slip the second, return the first after it) without working them, then purl them together. From the right side it looks like an ssk.
3. Another way to lean left: purl 2 together through the back loops.