Declension table of ?pratyādhāna

Neuter	Singular	Dual	Plural
Nominative	pratyādhānam	pratyādhāne	pratyādhānāni
Vocative	pratyādhāna	pratyādhāne	pratyādhānāni
Accusative	pratyādhānam	pratyādhāne	pratyādhānāni
Instrumental	pratyādhānena	pratyādhānābhyām	pratyādhānaiḥ
Dative	pratyādhānāya	pratyādhānābhyām	pratyādhānebhyaḥ
Ablative	pratyādhānāt	pratyādhānābhyām	pratyādhānebhyaḥ
Genitive	pratyādhānasya	pratyādhānayoḥ	pratyādhānānām
Locative	pratyādhāne	pratyādhānayoḥ	pratyādhāneṣu

Compound pratyādhāna -

Adverb -pratyādhānam -pratyādhānāt