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
BWC♯HDWEWF♯HGW+HA♯HB
What is true of it
B harmonic minor is B, C♯, D, E, F♯, G and A♯, and back to B.
Its steps are W – H – W – W – H – W+H – H, where W is a whole step and H a half.
On the same tonic, B natural minor differs from it by exactly one note.
Across the first twelve frets of the ukulele its notes fall in 30 places, which is what makes a scale a shape rather than a list.
Chords made only of these notes
C♯dimdiminishedC♯m7♭5half-diminished seventhDaugaugmentedEmminorEdimdiminishedEm7minor seventhEm7♭5half-diminished seventhF♯major
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on B
C harm minC♯ harm minD♭ harm minD harm minD♯ harm minE♭ harm minE harm minF harm minall 374