Declension table of adhyayana

Neuter	Singular	Dual	Plural
Nominative	adhyayanam	adhyayane	adhyayanāni
Vocative	adhyayana	adhyayane	adhyayanāni
Accusative	adhyayanam	adhyayane	adhyayanāni
Instrumental	adhyayanena	adhyayanābhyām	adhyayanaiḥ
Dative	adhyayanāya	adhyayanābhyām	adhyayanebhyaḥ
Ablative	adhyayanāt	adhyayanābhyām	adhyayanebhyaḥ
Genitive	adhyayanasya	adhyayanayoḥ	adhyayanānām
Locative	adhyayane	adhyayanayoḥ	adhyayaneṣu

Compound adhyayana -

Adverb -adhyayanam -adhyayanāt