B♭ Dominant 9th :: B♭ D F A♭ C

G
D
A
E
3
♭7
B♭
5
B♭
5
9
♭7
9
3
♭7
B♭
3
B♭
5
9
5
9
3
♭7
⬤ ⬤
3
⬤ ⬤
D Sus 4th :: D G A

G
D
A
E
4
D
5
5
4
4
D
5
D
5
4
D
⬤ ⬤
4
D
5
⬤ ⬤