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
⬤ ⬤
G Major 6th :: G B D E

G
D
A
E
G
5
6
6
3
G
3
G
5
5
6
3
6
3
G
5
⬤ ⬤
G
5
6
⬤ ⬤