$ sudo apt remove aptitude
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'aptitude' is not installed, so not removed. Did you mean 'aptitude:i386'?
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 aptitude:i386 : Depends: libapt-pkg4.12:i386 (>= 0.8.16~exp12ubuntu6) but it is not installable
                 Depends: libboost-iostreams1.46.1:i386 (>= 1.46.1-1) but it is not installable
                 Depends: libcwidget3:i386 but it is not installable
                 Depends: libept1.4.12:i386 but it is not installable
                 Depends: libncursesw5:i386 (>= 5.6+20070908) but it is not going to be installed
                 Depends: libsigc++-2.0-0c2a:i386 (>= 2.0.2) but it is not installable
                 Depends: libsqlite3-0:i386 (>= 3.6.5) but it is not going to be installed
                 Depends: libxapian22:i386 but it is not installable
                 Recommends: apt-xapian-index:i386 but it is not installable
                 Recommends: libparse-debianchangelog-perl:i386 but it is not installable
 google-chrome-stable : Depends: libpango1.0-0 (>= 1.14.0) but it is not going to be installed
                        Depends: libappindicator1 but it is not going to be installed
 libpam-systemd : Depends: systemd (= 229-4ubuntu13)
 libudev1 : Breaks: libudev1:i386 (!= 229-4ubuntu10) but 229-4ubuntu13 is to be installed
 libudev1:i386 : Breaks: libudev1 (!= 229-4ubuntu13) but 229-4ubuntu10 is to be installed
 ppa-purge : Depends: aptitude
 udev : Depends: libudev1 (= 229-4ubuntu13) but 229-4ubuntu10 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).