Thanks.as long as we(everyone) can realize in musicdom both scales and chords use A - G...and none are repeated.alternatively with chords I believe C major is the only one that does not use flats or sharps in it and here again none are repetitive unless you include the octave.
even b's and #'s used don't repeat.they do though fall in line with the A through G
just building block basics to make scales and/or chords.
take note aspiring or beginning guitarists.the rule IS written in stone. or izzat theory?
any way it's sliced it works.