D Dominant 7th (♭5) :: D F♯ A♭ C

F
C
G
D
♭7
D
3
♭5
D
♭5
3
♭7
3
♭5
♭7
D
♭5
D
♭7
3
⬤ ⬤
♭7
D
⬤ ⬤
F Sus 2nd :: F G C

F
C
G
D
F
5
2
2
F
F
5
2
5
2
F
5
⬤ ⬤
F
5
2
⬤ ⬤