If you are required to spell a particular stand-alone chord structure based on a given note without regard to a particular key, e.g., either a major, minor or diminished chord, simply make the necessary calculations. Piece of cake. D minor triad. B minor triad. G minor triad.
All chord factors are a minor third apart.
F double-sharp diminished triad. Tonic triad has the root in both the soprano and bass. 7 -I deviates in some way from the P.A. cadence. Soprano note in final tonic triad may be scale degree 3 or 5. One or both chords are in inversion.