<span class="searchmatch">collābēbāre</span> second-person singular imperfect active indicative of collābor...
collābimur collābiminī collābuntur imperfect collābēbar collābēbāris, <span class="searchmatch">collābēbāre</span> collābēbātur collābēbāmur collābēbāminī collābēbantur future collābar...