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D Dominant 7th (♭5) :: D F♯ A♭ C

A
E
C
G
♭7
♭5
3
D
♭7
♭5
D
♭7
3
D
♭7
♭5
3
D
♭5
3
⬤ ⬤
♭7
⬤ ⬤
F♯ C
G♭ Major 7th (♭5) :: G♭ B♭ C F

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