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
⬤ ⬤
B Minor 7th :: B D F♯ A

B
F♯
D
A
B
5
♭3
♭7
B
♭3
♭7
5
B
♭3
5
♭7
♭3
B
5
♭7
⬤ ⬤
B
5
♭3
♭7
⬤ ⬤