How to play an Eb7b5 chord on Accordion

AKA: Eb7(b5), Eb7/b5, Eb7(-5), Eb7 Flat 5, Eb Dominant 7th b5, Eb Dominant Seventh Flat Fifth

Notes:

E♭, G, B♭♭, D♭

Intervals:

R, 3°, dim5°, m7°

Left hand:

E♭ + B♭♭7
(D# + A7)

Fingering:

2 + 5 (bass pattern)

or

3 or 4 + 2 (counter bass pattern)