F Diminished :: F A♭ C♭

F
C
G
D
F
♭3
♭3
F
♭5
F
♭5
♭3
♭3
♭5
F
♭5
⬤ ⬤
F
⬤ ⬤
D♭ Major 7th :: D♭ F A♭ C

F
C
G
D
3
7
D♭
5
5
3
3
7
D♭
5
7
D♭
5
3
7
D♭
⬤ ⬤
3
7
⬤ ⬤