Declension table of ?samupānayana

Neuter	Singular	Dual	Plural
Nominative	samupānayanam	samupānayane	samupānayanāni
Vocative	samupānayana	samupānayane	samupānayanāni
Accusative	samupānayanam	samupānayane	samupānayanāni
Instrumental	samupānayanena	samupānayanābhyām	samupānayanaiḥ
Dative	samupānayanāya	samupānayanābhyām	samupānayanebhyaḥ
Ablative	samupānayanāt	samupānayanābhyām	samupānayanebhyaḥ
Genitive	samupānayanasya	samupānayanayoḥ	samupānayanānām
Locative	samupānayane	samupānayanayoḥ	samupānayaneṣu

Compound samupānayana -

Adverb -samupānayanam -samupānayanāt