<span class="searchmatch">recertificabas</span> second-person singular imperfect indicative of recertificar...
<span class="searchmatch">recertificaba</span> first/third-person singular imperfect indicative of recertificar...
recertifica recertificamos recertificáis recertifican imperfect <span class="searchmatch">recertificaba</span> <span class="searchmatch">recertificabas</span> <span class="searchmatch">recertificaba</span> recertificábamos recertificabais recertificaban preterite...