Declension table of ?drutatva

Neuter	Singular	Dual	Plural
Nominative	drutatvam	drutatve	drutatvāni
Vocative	drutatva	drutatve	drutatvāni
Accusative	drutatvam	drutatve	drutatvāni
Instrumental	drutatvena	drutatvābhyām	drutatvaiḥ
Dative	drutatvāya	drutatvābhyām	drutatvebhyaḥ
Ablative	drutatvāt	drutatvābhyām	drutatvebhyaḥ
Genitive	drutatvasya	drutatvayoḥ	drutatvānām
Locative	drutatve	drutatvayoḥ	drutatveṣu

Compound drutatva -

Adverb -drutatvam -drutatvāt