α. 1600s 1800s– bourock Brit. /ˈbuːrək/, U.S. /ˈburək/, Scottish English /ˈburək/, 1700s boorick, 1700s bourok, 1700s bowrock, 1800s bowerique, 1800s buirik, 1800s–1900s bourack, 1900s boorock.
β. 1700s–1800s bourroch, 1700s– bourach, 1700s– bouroch, 1800s bourich, 1800s– boorach, 1900s– boorich, 1900s– booruch.
γ. 1700s burach, 1700s burrach.