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