B♭ Dominant 7th :: B♭ D F A♭

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