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
⬤ ⬤
A Minor 6th :: A C E F♯

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