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
⬤ ⬤
G♭ Major :: G♭ B♭ D♭

F
C
G
D
G♭
5
3
G♭
3
G♭
5
5
3
3
G♭
5
⬤ ⬤
⬤ ⬤