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A Diminished 7th :: A C E♭ G♭

A
E
C
G
A
♭3
𝄫7
A
♭3
♭5
A
♭3
♭5
𝄫7
♭3
♭5
𝄫7
A
♭5
𝄫7
⬤ ⬤
A
♭3
⬤ ⬤
A E♭ G♭
B Dominant 7th :: B D♯ F♯ A

A
E
C
G
♭7
B
5
♭7
3
B
♭7
3
5
B
3
5
♭7
3
B
5
⬤ ⬤
♭7
⬤ ⬤