1. In the instant case I understood Aunt as the wives of your Uncles, both demised and living and the explanation is as under.
2. The share of your grandmother of the property of your deceased father and deceased Uncle can be claimed by the sons and daughters of her said predeceased sons.
2. After that her said share can be claimed by her living sons.
3. So, when the sons are alive, their wives, being your Aunts of living uncles, can not claim her said share of the property.
4. Similarly, the sons and daughters of her predeceased sons only can claim her said share and not the wives of her predeceased sons.
5. However, in case of your father's sisters, they are not entitled to the share of the said property, if they are married, since it is a HUF property and they are not the members of the HUF.