i.e.  Mechanic is supposed to check 12 components on every car he works on.  Each check creates a new row of data in the table.  I'm working with one table for all mechanics and all cars (cannot be changed).

 

I want to know every car he/she did not perform all 12 checks on.  I want to know what was missed for each car.

 

Can I do this?

 

Thank you in advance!