Declension table of ?avapātana

Neuter	Singular	Dual	Plural
Nominative	avapātanam	avapātane	avapātanāni
Vocative	avapātana	avapātane	avapātanāni
Accusative	avapātanam	avapātane	avapātanāni
Instrumental	avapātanena	avapātanābhyām	avapātanaiḥ
Dative	avapātanāya	avapātanābhyām	avapātanebhyaḥ
Ablative	avapātanāt	avapātanābhyām	avapātanebhyaḥ
Genitive	avapātanasya	avapātanayoḥ	avapātanānām
Locative	avapātane	avapātanayoḥ	avapātaneṣu

Compound avapātana -

Adverb -avapātanam -avapātanāt