Declension table of ?sureṇu

Masculine	Singular	Dual	Plural
Nominative	sureṇuḥ	sureṇū	sureṇavaḥ
Vocative	sureṇo	sureṇū	sureṇavaḥ
Accusative	sureṇum	sureṇū	sureṇūn
Instrumental	sureṇunā	sureṇubhyām	sureṇubhiḥ
Dative	sureṇave	sureṇubhyām	sureṇubhyaḥ
Ablative	sureṇoḥ	sureṇubhyām	sureṇubhyaḥ
Genitive	sureṇoḥ	sureṇvoḥ	sureṇūnām
Locative	sureṇau	sureṇvoḥ	sureṇuṣu

Compound sureṇu -

Adverb -sureṇu