I have a data set with 30 columns and multiple rows (some cells have no data). I would like to be able to facet the columns in groups. 1 2 3 4..... Row1 A B C D Row2 E A D F Row3 Q A B H Given the above data I would like the facet to retun the number of instances in a group of columns. For the first three columns I need the facet to return: A - 3 B - 2 C - 1 D - 1 E - 1 Q - 1 I have tried to combine columns when I loaded the data but the individual data was grouped as well. This is not the desired outcome. For example: ABC - 1 EAD - 1 QAB - 1 Thanks in advance.