Declension table of ?yāpana

Masculine	Singular	Dual	Plural
Nominative	yāpanaḥ	yāpanau	yāpanāḥ
Vocative	yāpana	yāpanau	yāpanāḥ
Accusative	yāpanam	yāpanau	yāpanān
Instrumental	yāpanena	yāpanābhyām	yāpanaiḥ yāpanebhiḥ
Dative	yāpanāya	yāpanābhyām	yāpanebhyaḥ
Ablative	yāpanāt	yāpanābhyām	yāpanebhyaḥ
Genitive	yāpanasya	yāpanayoḥ	yāpanānām
Locative	yāpane	yāpanayoḥ	yāpaneṣu

Compound yāpana -

Adverb -yāpanam -yāpanāt