Declension table of ?apratyayastha

Neuter	Singular	Dual	Plural
Nominative	apratyayastham	apratyayasthe	apratyayasthāni
Vocative	apratyayastha	apratyayasthe	apratyayasthāni
Accusative	apratyayastham	apratyayasthe	apratyayasthāni
Instrumental	apratyayasthena	apratyayasthābhyām	apratyayasthaiḥ
Dative	apratyayasthāya	apratyayasthābhyām	apratyayasthebhyaḥ
Ablative	apratyayasthāt	apratyayasthābhyām	apratyayasthebhyaḥ
Genitive	apratyayasthasya	apratyayasthayoḥ	apratyayasthānām
Locative	apratyayasthe	apratyayasthayoḥ	apratyayastheṣu

Compound apratyayastha -

Adverb -apratyayastham -apratyayasthāt