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Ying Yang (Governmental » Military)

* Yothu Yindi (Community » Music)

* Two-digit year date (Governmental » US Government)

* Two-digit year date (Governmental » NASA)

* Two-digit year date (Governmental » Transportation)

* Two-digit year date (Governmental » United Nations)

* Two-digit year date (Governmental » Military)

* Yoboseyo And Yeu (Academic & Science » Physics)