<span class="searchmatch">grejsimojsens</span> definite genitive singular of grejsimojs...
nominative genitive singular indefinite grejsimojs grejsimojs definite <span class="searchmatch">grejsimojsen</span> <span class="searchmatch">grejsimojsens</span> plural indefinite grejsimojser grejsimojsers definite grejsimojserna...