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
⬤ ⬤
⬤ ⬤
A♭ B E♭
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
⬤ ⬤
⬤ ⬤