Declension table of mastu

Masculine	Singular	Dual	Plural
Nominative	mastuḥ	mastū	mastavaḥ
Vocative	masto	mastū	mastavaḥ
Accusative	mastum	mastū	mastūn
Instrumental	mastunā	mastubhyām	mastubhiḥ
Dative	mastave	mastubhyām	mastubhyaḥ
Ablative	mastoḥ	mastubhyām	mastubhyaḥ
Genitive	mastoḥ	mastvoḥ	mastūnām
Locative	mastau	mastvoḥ	mastuṣu

Compound mastu -

Adverb -mastu