Create three paragraph Styles for the three sets (E, F, EF). The appearance of all of these should be the same. I would make the E and F sets based on the EF Style. That way changing the EF Style's formatting should change the other two.

When you want to print an E document, modify the F Style so that it has the font formatting of "Hidden." When you want to print an F document, modify the E Style so that it is "Hidden."

Understanding Styles in Microsoft Word