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C Major 7th (♭5) :: C E G♭ B

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

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