Declension table of ?astagamana

Neuter	Singular	Dual	Plural
Nominative	astagamanam	astagamane	astagamanāni
Vocative	astagamana	astagamane	astagamanāni
Accusative	astagamanam	astagamane	astagamanāni
Instrumental	astagamanena	astagamanābhyām	astagamanaiḥ
Dative	astagamanāya	astagamanābhyām	astagamanebhyaḥ
Ablative	astagamanāt	astagamanābhyām	astagamanebhyaḥ
Genitive	astagamanasya	astagamanayoḥ	astagamanānām
Locative	astagamane	astagamanayoḥ	astagamaneṣu

Compound astagamana -

Adverb -astagamanam -astagamanāt