For my graphic design I grouped together t-n-t to be percieved as one whole object. This, in other words, uses the gestalt theory of proximity. The two T's connect at the top, so even though they are clearly connected, they are seen as two seperate letters in which hug the letter N in between them.
When looking at this image your eye picks up on the complex images and the surrounding area is percieved as background even though its the same as the comples objects except it has no detail to it therefore is seen as background.
The image to the right is percieved as a bicycle though the figure of the bicycle is made up of various shapes that are placed approximately to create the bicycle.