B Diminished :: B D F

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

G
D
A
E
D
5
5
3
♭7
3
♭7
D
5
D
5
♭7
3
♭7
D
3
⬤ ⬤
D
5
⬤ ⬤