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