Declension table of ?anvāyatana

Neuter	Singular	Dual	Plural
Nominative	anvāyatanam	anvāyatane	anvāyatanāni
Vocative	anvāyatana	anvāyatane	anvāyatanāni
Accusative	anvāyatanam	anvāyatane	anvāyatanāni
Instrumental	anvāyatanena	anvāyatanābhyām	anvāyatanaiḥ
Dative	anvāyatanāya	anvāyatanābhyām	anvāyatanebhyaḥ
Ablative	anvāyatanāt	anvāyatanābhyām	anvāyatanebhyaḥ
Genitive	anvāyatanasya	anvāyatanayoḥ	anvāyatanānām
Locative	anvāyatane	anvāyatanayoḥ	anvāyataneṣu

Compound anvāyatana -

Adverb -anvāyatanam -anvāyatanāt