Breakdown of shares in inheritance

Assalaamualaikum

Respected Mufti

We would like to know the ruling regarding the following matter.
Kindly work out the Shari heirs and the division of an estate in the following scenario:
Deceased: Never married therefore
no wife and no children.

Surviving relatives :

Brother (pre-deceased) : 2 nephews, 2 nieces.

Sister 1 : 2 nephews, 2 nieces.

Sister 2 : 1 nephew, 2 nieces.

Sister 3 (pre-deceased) : 2 nephews.

Sister 4 (pre-deceased) : 1 niece.

Shukran.