C Major 7th (♭5) :: C E G♭ B

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

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