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B Dominant 7th (♭5) :: B D♯ F A

A
E
C
G
♭7
♭5
B
♭7
3
B
♭7
♭5
3
B
♭5
3
♭7
♭5
3
B
⬤ ⬤
♭7
⬤ ⬤
F
D♭ Major :: D♭ F A♭

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

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