þrýstingsmunurnafnorð karlkynBeygingeintalaán greinismeð greininf.þrýstingsmunurþrýstingsmunurinnþf.þrýstingsmunþrýstingsmuninnþgf.þrýstingsmunþrýstingsmuninumef.þrýstingsmunarþrýstingsmunarinsnf.þf.þgf.ef.