Not a lot to invent here.
The C Major (Ionian) scale is equivalent to the white keys on a piano (i.e. C,D,E,F,G,A,B). Similarly A Minor (Aeolian) and B Diminished (Locrian). Also D Dorian, E Phrygian, F Lydian and G Mixolydian. Basically the same concept with a different starting point.
On a guitar, C major, B diminished and A minor have similarities