Walther's second setting of this chorale is for manuals and pedal. There are two sections titled Versus 1 and Versus 2, followed by two more sections labeled "Evolutio". The Breitkopf edition also contains two fragments - a 3rd Versus for 1 manual, and a 3rd Evolutio with the heading "aller Stimmen per motum contrarium" - all voices in contrary motion. I've gone ahead and recorded the two fragments ;-)