Declension table of ?samarthana

Neuter	Singular	Dual	Plural
Nominative	samarthanam	samarthane	samarthanāni
Vocative	samarthana	samarthane	samarthanāni
Accusative	samarthanam	samarthane	samarthanāni
Instrumental	samarthanena	samarthanābhyām	samarthanaiḥ
Dative	samarthanāya	samarthanābhyām	samarthanebhyaḥ
Ablative	samarthanāt	samarthanābhyām	samarthanebhyaḥ
Genitive	samarthanasya	samarthanayoḥ	samarthanānām
Locative	samarthane	samarthanayoḥ	samarthaneṣu

Compound samarthana -

Adverb -samarthanam -samarthanāt