A Dominant 9th :: A C♯ E G B

B
F♯
D
A
9
A
♭7
3
5
9
A
3
5
9
♭7
3
A
5
♭7
9
A
5
♭7
3
⬤ ⬤
9
A
⬤ ⬤
B Diminished :: B D F

B
F♯
D
A
B
♭3
B
♭3
♭5
B
♭3
♭5
♭3
♭5
B
♭5
⬤ ⬤
B
♭3
⬤ ⬤