Actually, it would be more like this:
Code:
/--Alpha Delta Phi Fraternity--->
Alpha Delta Phi-------------------------------------<
| \--Alpha Delta Phi Society----->
|
\----->Beta Theta Pi---------------------------------------------->
| |
| \---------> Phi Gamma Delta------------>
| |
| \---------> Phi Kappa Psi------------>
| |
| \-------> Delta Tau Delta------>
|
\---------> Phi Delta Theta------------------->
After all, Delta Tau Delta was founded in opposition to some members of Phi Kappa Psi at Bethany College.