Declension table of ?pratyavasthātṛ

Masculine	Singular	Dual	Plural
Nominative	pratyavasthātā	pratyavasthātārau	pratyavasthātāraḥ
Vocative	pratyavasthātaḥ	pratyavasthātārau	pratyavasthātāraḥ
Accusative	pratyavasthātāram	pratyavasthātārau	pratyavasthātṝn
Instrumental	pratyavasthātrā	pratyavasthātṛbhyām	pratyavasthātṛbhiḥ
Dative	pratyavasthātre	pratyavasthātṛbhyām	pratyavasthātṛbhyaḥ
Ablative	pratyavasthātuḥ	pratyavasthātṛbhyām	pratyavasthātṛbhyaḥ
Genitive	pratyavasthātuḥ	pratyavasthātroḥ	pratyavasthātṝṇām
Locative	pratyavasthātari	pratyavasthātroḥ	pratyavasthātṛṣu

Compound pratyavasthātṛ -

Adverb -pratyavasthātṛ