I’ve accidently swiped 2 of my collection items on Firefox for Android, and I don’t know which items I deleted but probably want them back 
I just picked up my phone and delete one swiping with my thumb. And then another one just to see if it can be done so easily, without hitting the trash button and yep, gone. But didn’t check which one I deleted!
So, how can I see what I deleted / how can I undelete it? 