/usr/ is in libkf5sonnet-dev 5.28.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/KF5/
/usr/include/KF5/SonnetCore/
/usr/include/KF5/SonnetCore/Sonnet/
/usr/include/KF5/SonnetCore/Sonnet/BackgroundChecker
/usr/include/KF5/SonnetCore/Sonnet/GuessLanguage
/usr/include/KF5/SonnetCore/Sonnet/Speller
/usr/include/KF5/SonnetCore/sonnet/
/usr/include/KF5/SonnetCore/sonnet/backgroundchecker.h
/usr/include/KF5/SonnetCore/sonnet/guesslanguage.h
/usr/include/KF5/SonnetCore/sonnet/sonnetcore_export.h
/usr/include/KF5/SonnetCore/sonnet/speller.h
/usr/include/KF5/SonnetUi/
/usr/include/KF5/SonnetUi/Sonnet/
/usr/include/KF5/SonnetUi/Sonnet/ConfigDialog
/usr/include/KF5/SonnetUi/Sonnet/ConfigWidget
/usr/include/KF5/SonnetUi/Sonnet/Dialog
/usr/include/KF5/SonnetUi/Sonnet/DictionaryComboBox
/usr/include/KF5/SonnetUi/Sonnet/Highlighter
/usr/include/KF5/SonnetUi/Sonnet/SpellCheckDecorator
/usr/include/KF5/SonnetUi/sonnet/
/usr/include/KF5/SonnetUi/sonnet/configdialog.h
/usr/include/KF5/SonnetUi/sonnet/configwidget.h
/usr/include/KF5/SonnetUi/sonnet/dialog.h
/usr/include/KF5/SonnetUi/sonnet/dictionarycombobox.h
/usr/include/KF5/SonnetUi/sonnet/highlighter.h
/usr/include/KF5/SonnetUi/sonnet/sonnetui_export.h
/usr/include/KF5/SonnetUi/sonnet/spellcheckdecorator.h
/usr/include/KF5/sonnet_version.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5Sonnet/
/usr/lib/x86_64-linux-gnu/cmake/KF5Sonnet/KF5SonnetConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Sonnet/KF5SonnetConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Sonnet/KF5SonnetTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Sonnet/KF5SonnetTargets.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_SonnetCore.pri
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_SonnetUi.pri
/usr/share/
/usr/share/doc/
/usr/share/doc/libkf5sonnet-dev/
/usr/share/doc/libkf5sonnet-dev/README.md
/usr/share/doc/libkf5sonnet-dev/changelog.Debian.gz
/usr/share/doc/libkf5sonnet-dev/copyright
/usr/lib/x86_64-linux-gnu/libKF5SonnetCore.so
/usr/lib/x86_64-linux-gnu/libKF5SonnetUi.so