/usr/ is in libgwengui-qt4-dev 4.20.0-1.
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/usr/include/
/usr/include/gwenhywfar4/
/usr/include/gwenhywfar4/gwen-gui-qt4/
/usr/include/gwenhywfar4/gwen-gui-qt4/qt4_gui.hpp
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/gwengui-qt4-4.20/
/usr/lib/x86_64-linux-gnu/cmake/gwengui-qt4-4.20/gwengui-qt4-config-version.cmake
/usr/lib/x86_64-linux-gnu/cmake/gwengui-qt4-4.20/gwengui-qt4-config.cmake
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gwengui-qt4.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libgwengui-qt4-dev/
/usr/share/doc/libgwengui-qt4-dev/copyright
/usr/lib/x86_64-linux-gnu/libgwengui-qt4.so
/usr/share/doc/libgwengui-qt4-dev/changelog.Debian.gz