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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
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B
B Major 7th :: B D♯ F♯ A♯

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