Most Euler diagrams in this section (except doguva) require redrawing. It is shown for only two of them. Blightless means, that no two sets are equal or complements, and that no set is empty or the universe.

doguva

This is the only Euler diagram on this page, where the original shape is the correct one.
See also filtrates of this function.

kulika (even digit sums)

The cells with an even digit sum are true (white). Those with an odd digit sum are false (gray).

torova (odd digit sums)

The cells with an odd digit sum are true (white). Those with an even digit sum are false (gray).

The diagram above can be seen as a cut through intersecting ellipsoids.
As a 2D diagram it is not good, because each of the two green borders (0→2 and 8→10) appears more than once.
The problem is not fully avoided in the variant below. If A or C were removed, the outer bundle could be drawn as 2×3 grid.

In these examples set B is the universe, and set F is empty, which means that both are removed.
The removed sets are only indicated by an outlined (rather than solid) letter, but they are not part of the binary labels.

bitada

duvola

As above, but spot 2 is false. This makes D the complement of A and C.