<span class="searchmatch">tidsintervallets</span> definite genitive singular of tidsintervall...
<span class="searchmatch">tidsintervallet</span> definite singular of tidsintervall...
singular indefinite tidsintervall tidsintervalls definite <span class="searchmatch">tidsintervallet</span> <span class="searchmatch">tidsintervallets</span> plural indefinite tidsintervall tidsintervalls definite tidsintervallen...