The examples on this page came to life as variations on a rose-ground with “do nothing (much)” on the left and right. My first studies of Groundforge learned me, that the scheme needed was actually a paris ground!
The photo shows the example on the bottom of this page, but slighty adapted to get the colours right.
Traditional Paris ground
Paris ground in a diamond
Big Paris ground
Way of making
The following example (ground 0404) shows three different matrix-scheme’s to obtain the same ground.