G♭ Major 7th :: G♭ B♭ D♭ F

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

G
D
A
E
D
5
5
3
♭7
3
♭7
D
5
D
5
♭7
3
♭7
D
3
⬤ ⬤
D
5
⬤ ⬤