C Major 7th (♭5) :: C E G♭ B

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

B
F♯
D
A
9
A
3
7
5
9
A
3
5
9
7
3
A
5
7
9
A
5
3
7
⬤ ⬤
9
A
⬤ ⬤