G♭ Major 7th :: G♭ B♭ D♭ F

B
F♯
D
A
G♭
3
5
7
3
G♭
5
7
G♭
5
3
7
G♭
3
7
5
⬤ ⬤
G♭
⬤ ⬤
D Major 6th :: D F♯ A B

B
F♯
D
A
6
3
D
5
6
D
5
3
6
D
3
5
D
6
3
5
⬤ ⬤
6
3
D
5
⬤ ⬤