B♭ Major 6th :: B♭ D F G

B
F♯
D
A
3
6
B♭
3
5
B♭
6
3
5
6
3
B♭
5
6
B♭
5
⬤ ⬤
3
⬤ ⬤
G Minor 6th :: G B♭ D E

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