Hi again

Is it possible to compare two rows of numbers:

Example: 
12064882 
12064942
12065169
12065170
12078514
12078515
12090638
12090641
12090642
12090643
And compare it with
12064943
12090642
12090643
12122529
12122530
12125930
12126739
12126740
12126741
And then remove the numbers that are identical, leaving only behind numbers that dont occur in BOTH.

I tried using the function "Remove Duplicates" didnt work that well, as it just compared each line to the other column like this; "Compare A12 to B12". I want it to compare the whole column and search for the exact same number in both columns.

Thanks, I feel like this is a tricky one :P