2+2=4

It is no accident that a fourlegged table is more stable than a three legged table. Patterns and combinations containing four elements are very common in both natural and human culture. Take for example....

North	East	South	West
Winter	Spring	Summer	Autumn
gravity adenine solid earth length hydrogen blue	strong nuclear thiamine plasma fire time carbon tone	weak nuclear cytosine gas air depth oxygen yellow	electormagnetism guanine liquid water width nitrogen red

If you don't know what you're looking for, well join the club. But here are two possible choices.  PROCEED or GO BACK HOME.............