Declension table of ?suvena

Neuter	Singular	Dual	Plural
Nominative	suvenam	suvene	suvenāni
Vocative	suvena	suvene	suvenāni
Accusative	suvenam	suvene	suvenāni
Instrumental	suvenena	suvenābhyām	suvenaiḥ
Dative	suvenāya	suvenābhyām	suvenebhyaḥ
Ablative	suvenāt	suvenābhyām	suvenebhyaḥ
Genitive	suvenasya	suvenayoḥ	suvenānām
Locative	suvene	suvenayoḥ	suveneṣu

Compound suvena -

Adverb -suvenam -suvenāt