Chapter letters in other than Greek or English

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Triangle names the chapters after the college. A few still keep the old college name. IIT chapter uses the designation "Armour" chapter.

FarmHouse is similar, as does Ceres (sorority).

A number of UC Berkeley locals became part of nationals, and use the local name as their chapter designation (while the other chapters use Greek letters). Delta Chi uses "Abracadabra" as a chapter designator.

Alpha Gamma Sigma uses "Illidell" as a chapter designator.