Declension table of ?sārthakatva

Neuter	Singular	Dual	Plural
Nominative	sārthakatvam	sārthakatve	sārthakatvāni
Vocative	sārthakatva	sārthakatve	sārthakatvāni
Accusative	sārthakatvam	sārthakatve	sārthakatvāni
Instrumental	sārthakatvena	sārthakatvābhyām	sārthakatvaiḥ
Dative	sārthakatvāya	sārthakatvābhyām	sārthakatvebhyaḥ
Ablative	sārthakatvāt	sārthakatvābhyām	sārthakatvebhyaḥ
Genitive	sārthakatvasya	sārthakatvayoḥ	sārthakatvānām
Locative	sārthakatve	sārthakatvayoḥ	sārthakatveṣu

Compound sārthakatva -

Adverb -sārthakatvam -sārthakatvāt