ii  linux-headers-4.15.0-13                    4.15.0-13.14                           all          Header files related to Linux kernel version 4.15.0
ii  linux-headers-4.15.0-13-generic            4.15.0-13.14                           amd64        Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii  linux-headers-4.15.0-15                    4.15.0-15.16                           all          Header files related to Linux kernel version 4.15.0
ii  linux-headers-4.15.0-15-generic            4.15.0-15.16                           amd64        Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii  linux-headers-generic                      4.15.0.15.16                           amd64        Generic Linux kernel headers
iU  virtualbox                                 5.2.10-dfsg-2                          amd64        x86 virtualization solution - base binaries
iF  virtualbox-dkms                            5.2.10-dfsg-2                          all          x86 virtualization solution - kernel module sources for dkms
rc  virtualbox-ext-pack                        5.2.10-2                               all          extra capabilities for VirtualBox, downloader.
iU  virtualbox-qt                              5.2.10-dfsg-2                          amd64        x86 virtualization solution - Qt based user interface