Mahabharata 1.114.44

भीमसेनोग्रसेनौ च ऊर्णायुरनघस्तथागोपतिर्धृतराष्ट्रश्च सूर्यवर्चाश्च सप्तमः

bhīmasenograsenau ca ūrṇāyuranaghastathāgopatirdhṛtarāṣṭraśca sūryavarcāśca saptamaḥ

Our plain-language meaning of this verse is waiting for scholar review.