<span class="searchmatch">difficillimōrum</span> genitive masculine/neuter plural of difficillimus...
difficillima genitive difficillimī difficillimae difficillimī <span class="searchmatch">difficillimōrum</span> difficillimārum <span class="searchmatch">difficillimōrum</span> dative difficillimō difficillimae difficillimō difficillimīs...