<span class="searchmatch">grouillai</span> first-person singular past historic of grouiller...
<span class="searchmatch">grouillais</span> first/second-person singular imperfect indicative of grouiller...
grouillons /ɡʁu.jɔ̃/ grouillez /ɡʁu.je/ grouillent /ɡʁuj/ imperfect <span class="searchmatch">grouillais</span> /ɡʁu.jɛ/ <span class="searchmatch">grouillais</span> /ɡʁu.jɛ/ grouillait /ɡʁu.jɛ/ grouillions /ɡʁuj.jɔ̃/ grouilliez...