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G♭ Dominant 7th (♭5) :: G♭ B♭ C E

A
E
C
G
♭7
♭5
3
G♭
♭5
3
♭7
♭5
3
G♭
♭7
♭5
G♭
♭7
3
G♭
⬤ ⬤
♭7
♭5
⬤ ⬤
B♭ E
G Diminished 7th :: G B♭ D♭ E

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

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