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A Half Diminished 7th :: A C E♭ G

A
E
C
G
A
♭3
♭7
A
♭3
♭7
♭5
A
♭3
♭5
♭7
♭3
♭5
A
♭7
♭5
⬤ ⬤
A
♭3
♭7
⬤ ⬤
A
G♭ Minor 9th :: F♯ A C♯ E G♯

A
E
C
G
♭3
♭7
5
9
F♯
♭3
5
9
♭7
♭3
F♯
5
♭7
9
F♯
5
♭3
♭7
9
F♯
⬤ ⬤
♭3
♭7
⬤ ⬤