relative-without-designation-in-law

1- Relative-without-designation's spouse.
2- Spouse's relative-without-designation.

Relative-without-designation-in-law (RWD-in-law).

co-relative-without-designation-in-law

Spouse's relative-without-designation-in-law's spouse.

Co-relative-without-designation-in-law (co-RWD-in-law).

relative-without-designation

1- Cousin's descendant.
2- Ascendant of second degree for up's sibling's descendant.

Relative-without-designation (RWD).