Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
AW+HCWDWEW+HGWA
What is true of it
A minor pentatonic is A, C, D, E and G, and back to A.
Its steps are W+H – W – W – W+H – W, where W is a whole step and H a half.
It uses no sharps and no flats at all: seven letters, seven white keys.
Across the first twelve frets of the ukulele its notes fall in 24 places, which is what makes a scale a shape rather than a list.
Chords made only of these notes
Found by testing every chord in the catalogue against these 5 sounds, not chosen.
Other scales on A
A major pentatonicpentatonicA bluespentatonicA major bluespentatonicA majormajorA natural minorminorA harmonic minorminor
C min pentC♯ min pentD♭ min pentD min pentD♯ min pentE♭ min pentE min pentF min pentall 374