<span class="searchmatch">perstringendōrum</span> genitive masculine/neuter plural of perstringendus...
genitive perstringendī perstringendae perstringendī <span class="searchmatch">perstringendōrum</span> perstringendārum <span class="searchmatch">perstringendōrum</span> dative perstringendō perstringendae perstringendō...