<span class="searchmatch">collabōrābātis</span> second-person plural imperfect active indicative of collabōrō...
collabōrant imperfect collabōrābam collabōrābās collabōrābat collabōrābāmus <span class="searchmatch">collabōrābātis</span> collabōrābant future collabōrābō collabōrābis collabōrābit collabōrābimus...