<span class="searchmatch">collāberēmur</span> first-person plural imperfect active subjunctive of collābor...
collābantur imperfect collāberer collāberēris, collāberēre collāberētur <span class="searchmatch">collāberēmur</span> collāberēminī collāberentur perfect collāpsus + present active subjunctive...