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