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F Diminished :: F A♭ B

A
E
C
G
F
♭3
♭5
♭3
♭5
F
♭5
F
♭3
F
♭3
♭5
⬤ ⬤
⬤ ⬤
F
F Major 7th :: F A C E

A
E
C
G
3
7
5
F
3
5
7
3
F
5
7
F
5
3
7
F
⬤ ⬤
3
7
5
⬤ ⬤