C Diminished
::
C
E♭
G♭
⨉
G
D
A
E
♭3
♭5
⬤
C
⬤
♭5
⬤
C
⬤
♭3
⬤
⬤
♭3
C
⬤
♭5
⬤
C
♭5
♭3
⬤ ⬤
⬤ ⬤
A Major 7th (♭5)
::
A
C♯
E♭
G♯
⨉
G
D
A
E
A
7
♭5
A
⬤
⬤
3
7
⬤
A
⬤
3
7
♭5
⬤
A
⬤
♭5
⬤
3
⬤
3
7
♭5
⬤ ⬤
A
⬤ ⬤