D♭ Major 7th :: D♭ F A♭ C

A
E
C
G
7
3
D♭
5
7
D♭
5
3
7
D♭
3
7
5
D♭
3
5
⬤ ⬤
7
⬤ ⬤
C
C Minor 7th (♭5) :: C E♭ G♭ B♭

A
E
C
G
C
♭7
♭5
C
♭3
♭7
C
♭3
♭7
♭5
C
♭3
♭5
♭7
♭3
♭5
⬤ ⬤
C
⬤ ⬤