How to play a G7b9 chord on Accordion

AKA: G7 Flat 9, G7(b9), G7/b9, G Dominant 7th b9, G Dominant Seventh Flat Nine

Notes:

G, B, D, F, A♭

Intervals:

R, 3°, 5°, m7°, m9°

Left hand:

G + Fdim

Optional:

G + G Major + Fdim

Fingering:

3 + 2 or 4 + 2

Optional: 4 + 3 + 2