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C Half Diminished 7th
::
C
E♭
G♭
B♭
A
E
C
G
C
♭7
♭5
⬤
C
♭3
♭7
⬤
⬤
C
⬤
♭3
♭7
♭5
⬤
⬤
C
♭3
⬤
♭5
⬤
♭7
♭3
♭5
⬤ ⬤
C
⬤ ⬤
A Augmented 7th
::
A
C♯
F
G
A
E
C
G
A
♭7
♯5
3
A
⬤
♭7
⬤
3
⬤
A
♯5
⬤
3
⬤
♭7
⬤
♯5
⬤
3
A
⬤
♭7
♯5
⬤ ⬤
A
♭7
⬤ ⬤