How to play a BMaj7/9 chord on Accordion

AKA: Bj7/9, BM7/9, BM9, BMa7/9, BMaj7/9, Bmaj9, B major7/9, BΔ7/9, BΔ9

Notes:

B, D#, F#, A#, C#

Intervals:

R, 3°, 5°, 7°, 9°

Left hand:

B + BM + F#M
(C♭ + C♭M + G♭M)

Fingering:

4 + 3 + 2