B Diminished :: B D F

F
C
G
D
♭5
♭3
♭3
♭5
B
♭5
B
♭3
♭3
B
♭5
B
⬤ ⬤
♭5
♭3
⬤ ⬤
B♭ Minor 9th :: B♭ D♭ F A♭ C

F
C
G
D
5
9
♭3
♭7
♭7
B♭
5
B♭
5
9
♭3
♭7
9
♭3
♭7
B♭
B♭
5
9
♭3
⬤ ⬤
5
9
⬤ ⬤