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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
B♭ Diminished :: B♭ D♭ E

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

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