Phi Epsilon Chi

Phi Epsilon Chi Fraternity (ΦΕΧ) (in Spanish) Fi Epsilon Cai is commonly known as La Phi Epsilon, is a Puerto Rican fraternity established at originally University of Puerto Rico at Mayagüez on September 26, 1943 by two women and seven male students of University of Puerto Rico at Mayagüez.

https://en.wikipedia.org/wiki/Phi_Epsilon_Chi