Declension table of ?upayāpana

Neuter	Singular	Dual	Plural
Nominative	upayāpanam	upayāpane	upayāpanāni
Vocative	upayāpana	upayāpane	upayāpanāni
Accusative	upayāpanam	upayāpane	upayāpanāni
Instrumental	upayāpanena	upayāpanābhyām	upayāpanaiḥ
Dative	upayāpanāya	upayāpanābhyām	upayāpanebhyaḥ
Ablative	upayāpanāt	upayāpanābhyām	upayāpanebhyaḥ
Genitive	upayāpanasya	upayāpanayoḥ	upayāpanānām
Locative	upayāpane	upayāpanayoḥ	upayāpaneṣu

Compound upayāpana -

Adverb -upayāpanam -upayāpanāt