<span class="searchmatch">collabōrābāris</span> second-person singular imperfect passive indicative of collabōrō...
collabōrātur collabōrāmur collabōrāminī collabōrantur imperfect collabōrābar <span class="searchmatch">collabōrābāris</span>, collabōrābāre collabōrābātur collabōrābāmur collabōrābāminī collabōrābantur...