Declension table of ?mitratva

Neuter	Singular	Dual	Plural
Nominative	mitratvam	mitratve	mitratvāni
Vocative	mitratva	mitratve	mitratvāni
Accusative	mitratvam	mitratve	mitratvāni
Instrumental	mitratvena	mitratvābhyām	mitratvaiḥ
Dative	mitratvāya	mitratvābhyām	mitratvebhyaḥ
Ablative	mitratvāt	mitratvābhyām	mitratvebhyaḥ
Genitive	mitratvasya	mitratvayoḥ	mitratvānām
Locative	mitratve	mitratvayoḥ	mitratveṣu

Compound mitratva -

Adverb -mitratvam -mitratvāt