Also D♭ Diminished (half-whole), E Diminished (half-whole)
F Diminished (whole-half): F G A♭ B♭ C♭ D♭ D E. Formula 1 2 ♭3 4 ♭5 ♭6 6 7. Same notes as D♭ Diminished (half-whole), E Diminished (half-whole), G Diminished (half-whole). Whole and half steps in turn, starting with a whole step: it fits diminished 7th chords and repeats every minor 3rd.