G Major 7th (♭5) :: G B D♭ F♯

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

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