so i have several hundred contacts, most of which are filed into groups (e.g. personal, work, etc.) quite a few, however, aren't filed into a group. i want to file these, but don't know which ones they are, i only know the total contacts is more than the total i have filed.
how do i add "group" to the view in each card? or is there some query that allows me to find unfiled contacts?

thanks.