Make chords with numbers. Take a tone from the orange circle on
position 1 of the green circle. The rest is easy. The tones 1-3-5
in the green circle are a major chord for all notes. The tones
1-b3-5 in the green circle is a minor chord for all notes. The
tones 1-3-5-7 in the green circle is a mayor seventh chord for all
tones. Each chord (sus2, sus4, sixth and so on) has the same
numbers for all tones. So easy. And the circle of fifths is there
too. Make all music.