Structural formulas for ....

What do structural formulas for c6h4(ch3)2 look like?

dimethyl benzene,
aka Xylene
come in 3 isomers

ortho-, meta- & para-xylene
http://en.wikipedia.org/wiki/Xylene

for structure see:
http://www.google.com/imgres?imgurl=http…

http://www.google.com/imgres?imgurl=http…

http://www.google.com/imgres?imgurl=http…