D Diminished :: D F A♭

F
C
G
D
♭3
D
♭5
D
♭5
♭3
♭3
♭5
D
♭5
D
♭3
⬤ ⬤
♭3
D
⬤ ⬤
A♭ Minor 6th :: A♭ C♭ E♭ F

F
C
G
D
6
A♭
5
A♭
5
6
♭3
6
♭3
A♭
A♭
5
♭3
5
6
♭3
⬤ ⬤
6
⬤ ⬤