Chi Omega goes backwards through the alphabet.
The Omega chapter is reserved for Chi Omegas that have passed away. The founding chapter, at the University of Arkansas, is Psi chapter. Then we go to Alpha Psi and work backwards - Alpha Psi, Alpha Chi, Alpha Phi etc. Then on to Beta, then Gamma and so forth.
So we name backwards and we are (as we discovered on another thread) the only southern founded NPC sorority to have a monogram badge. Guess my founders were some crazy, cooky ladies!!!