Chart with agglomerated dimensions from 4 different columns with the same options as values

Hello everyone, 

Is there a function or possibility to combine four different columns with the same possible contents into a single dimension? These columns are dependent on other columns and only if the value in column A = X I want to read the value from column A2, otherwise not. I have inserted an example.

Thank you very much!

For example: Here i would like to build a column chart where the dimension is X (coming from A-D) and the KPI is a sum from column A2-D4 where a X was in A-B (everhting marked red)