B♭ Major 7th :: B♭ D F A

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

G
D
A
E
5
♭3
♭7
♭7
C
5
C
5
♭3
♭7
♭3
♭7
C
C
5
♭3
⬤ ⬤
5
⬤ ⬤
C
D Minor 7th :: D F A C

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