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
⬤ ⬤
⬤ ⬤
B♭ D♭ F
B♭ Minor 7th :: B♭ D♭ F A♭

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

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