Declension table of ?samakriyatva

Neuter	Singular	Dual	Plural
Nominative	samakriyatvam	samakriyatve	samakriyatvāni
Vocative	samakriyatva	samakriyatve	samakriyatvāni
Accusative	samakriyatvam	samakriyatve	samakriyatvāni
Instrumental	samakriyatvena	samakriyatvābhyām	samakriyatvaiḥ
Dative	samakriyatvāya	samakriyatvābhyām	samakriyatvebhyaḥ
Ablative	samakriyatvāt	samakriyatvābhyām	samakriyatvebhyaḥ
Genitive	samakriyatvasya	samakriyatvayoḥ	samakriyatvānām
Locative	samakriyatve	samakriyatvayoḥ	samakriyatveṣu

Compound samakriyatva -

Adverb -samakriyatvam -samakriyatvāt