C Major 7th (♭5) :: C E G♭ B

G
D
A
E
3
3
7
♭5
C
7
♭5
C
3
7
C
3
7
♭5
C
♭5
⬤ ⬤
3
⬤ ⬤
C Major 9th :: C E G B D

G
D
A
E
5
9
3
3
7
C
5
7
C
5
9
9
3
7
C
3
7
C
5
9
⬤ ⬤
5
9
3
⬤ ⬤