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