C Major 7th (♭5) :: C E G♭ B

F
C
G
D
C
♭5
3
3
7
♭5
C
7
♭5
C
3
7
C
3
7
♭5
⬤ ⬤
C
⬤ ⬤
C Minor 6th :: C E♭ G A

F
C
G
D
C
5
♭3
5
6
♭3
6
C
5
C
5
6
♭3
6
♭3
C
⬤ ⬤
C
5
⬤ ⬤