C Major 7th (♭5) :: C E G♭ B

F
C
G
D
C
♭5
3
3
7
♭5
C
7
♭5
C
3
7
C
3
7
♭5
⬤ ⬤
C
⬤ ⬤
A Major 6th :: A C♯ E F♯

F
C
G
D
6
3
A
5
A
5
6
6
3
A
3
A
5
5
6
3
⬤ ⬤
⬤ ⬤