Declension table of ?samardhana

Masculine	Singular	Dual	Plural
Nominative	samardhanaḥ	samardhanau	samardhanāḥ
Vocative	samardhana	samardhanau	samardhanāḥ
Accusative	samardhanam	samardhanau	samardhanān
Instrumental	samardhanena	samardhanābhyām	samardhanaiḥ samardhanebhiḥ
Dative	samardhanāya	samardhanābhyām	samardhanebhyaḥ
Ablative	samardhanāt	samardhanābhyām	samardhanebhyaḥ
Genitive	samardhanasya	samardhanayoḥ	samardhanānām
Locative	samardhane	samardhanayoḥ	samardhaneṣu

Compound samardhana -

Adverb -samardhanam -samardhanāt