Declension table of astamayana

Neuter	Singular	Dual	Plural
Nominative	astamayanam	astamayane	astamayanāni
Vocative	astamayana	astamayane	astamayanāni
Accusative	astamayanam	astamayane	astamayanāni
Instrumental	astamayanena	astamayanābhyām	astamayanaiḥ
Dative	astamayanāya	astamayanābhyām	astamayanebhyaḥ
Ablative	astamayanāt	astamayanābhyām	astamayanebhyaḥ
Genitive	astamayanasya	astamayanayoḥ	astamayanānām
Locative	astamayane	astamayanayoḥ	astamayaneṣu

Compound astamayana -

Adverb -astamayanam -astamayanāt