Here i added the pic from our formulas section and added the sevenths formula example. You can see again it goes from 1-7 now for this example these are how all the sevenths chords are arranged in the key
You can see that the number one (I) and the number 4 (iv) are green that stands for major sevenths ( k prefer the shape on the right
Now the number 2 (ii) the number 3 (iii) and the number 6 (Vi) are all red that stands for minor sevenths (again I like the shape on the right)
And lastly the number 5 (V) is blue that stands for dominant sevenths
There is also a variant for the diminished part but I have looked at that yet so just Google it if it's that important to you
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52 weeks to learn Em
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