Declension table of ?asamarthatva

Neuter	Singular	Dual	Plural
Nominative	asamarthatvam	asamarthatve	asamarthatvāni
Vocative	asamarthatva	asamarthatve	asamarthatvāni
Accusative	asamarthatvam	asamarthatve	asamarthatvāni
Instrumental	asamarthatvena	asamarthatvābhyām	asamarthatvaiḥ
Dative	asamarthatvāya	asamarthatvābhyām	asamarthatvebhyaḥ
Ablative	asamarthatvāt	asamarthatvābhyām	asamarthatvebhyaḥ
Genitive	asamarthatvasya	asamarthatvayoḥ	asamarthatvānām
Locative	asamarthatve	asamarthatvayoḥ	asamarthatveṣu

Compound asamarthatva -

Adverb -asamarthatvam -asamarthatvāt