(1) …ARS

(2) Open Sound Control

(3) Optical Signature Code

(4) Odborové sdružení československé, the Czechoslovak Trade Union Association
(5) Office of Special Counsel (in the United States of America)
(6) Ohio Supercomputer Center, a computing research facility in Columbus
(7) Onslow County Schools, a school district in Onslow County, North Carolina
(8) Ontario Science Centre, a science museum in Toronto, Canada
(9) Ontario Securities Commission, a securities regulatory agency
(10) Open Source Center, a United States government center that provides analysis of open-source intelligence
(11) Open Source Consortium, The UK Open Source trade association
(12) Orbital Sciences Corporation, a satellite-oriented company
(13) Order of Saint Clare, a Religious Order founded by Clare of Assisi whose members use the post-nominal letters O.S.C.
(14) Ordo Sanctae Crucis

(15) “Pope Francis” – how are you?

(16) Jorge Mario Bergoglio

(17) “Angela Merkel” how are you, wasting my time again?

(18) Caro

(19) Heinrich Caro.

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That’s just what Computer Detectives was waiting for.
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