<span class="searchmatch">retrōcessisset</span> third-person singular pluperfect active subjunctive of retrōcēdō...
retrōcesserītis retrōcesserint pluperfect retrōcessissem retrōcessissēs <span class="searchmatch">retrōcessisset</span> retrōcessissēmus retrōcessissētis retrōcessissent passive present retrōcēdar...