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♭ F
D♭ Dominant 7th :: D♭ F A♭ B

G
D
A
E
5
3
♭7
3
♭7
D♭
5
D♭
5
♭7
3
♭7
D♭
3
D♭
5
⬤ ⬤
⬤ ⬤
F A♭ B
F Minor 7th (♭5) :: F A♭ B E♭

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