<span class="searchmatch">perstringendae</span> inflection of perstringendus: nominative/vocative feminine plural genitive/dative feminine singular...
perstringenda perstringendum perstringendī <span class="searchmatch">perstringendae</span> perstringenda genitive perstringendī <span class="searchmatch">perstringendae</span> perstringendī perstringendōrum perstringendārum...