Reduce netlist with parasitic resistors

Hello,
during a parasitic extraction executed by DIVA, I obtain a lot of
parasitic resistors of the same kind. I noticed that a lot of it are
in series or in parallel. Does someone know if is possible to
automatically compute (during or after extraction) these resistors in
series or in parallel so I would obtain a netlist with less component
to be simulated?

Thank you,

Camelot

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