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tap a note to hear it012345EADGBe×5612356122356A shape

A shape, at the nut

A major pentWhy? The CAGED cycle →
Shape

AGEDCAagain at fret 12. The five forms always run in that order, and the loop never breaks.

Scale over the top
In each dot
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A major pent around the A shape at the nut. Filled dot is the root, thick ring is a chord tone you are already fretting, thin ring is the rest of the scale.