rather than drag to the timeline, drag to the canvas, and drop in the Superimpose window.
OR double click into the viewer, and use F12 to superimpose.
i think if you start with angle 1 on V1, then superimpose 12, 11, 10, 9 etc you will get the layout you want.
you should probably give Pluraleyes a go,
or better, FCPX, which has a similar function built in.
nick