Land Footprints

I am trying to create a grid footprint template for all the standard plot sizes availabel in SL, but I am struggling to find out what the standard sizes are.

I know the following sizes;

512sqm = 16X32
1024sqm = 32x32

Does anyone know the footprint sizes of the otehr standard plot sizes, or already have some grids already created that they would care to share.

These grids would make life so much easier when building houses to make sure they fit on standard plot sizes

Or 8x64

Or 4x128

Or an L-shape of 16x16 + 8x32

Or an H shape with two 8x24 legs connected by an 8x16 cross piece.

Or a stair-step shape of... well, you get the idea.

You'd need a pretty long list to name every conceivable footprint for every possible parcel size. The important thing to know is one "unit" of land is 4x4M. Put 32 such "units" together, and you get a 512 square meter parcel. The graphical configuration of the "units" can be such that it forms almost any blocky shape you can imagine.