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
⬤ ⬤
⬤ ⬤
G♭
A♭ Minor 7th :: A♭ B E♭ G♭

G
D
A
E
A♭
5
♭3
♭7
♭3
♭7
A♭
A♭
5
♭3
5
♭3
♭7
♭7
A♭
5
⬤ ⬤
⬤ ⬤
B E♭ G♭
C♭ Major 7th :: C♭ E♭ G♭ B♭

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