Declension table of ?saṃsevana

Neuter	Singular	Dual	Plural
Nominative	saṃsevanam	saṃsevane	saṃsevanāni
Vocative	saṃsevana	saṃsevane	saṃsevanāni
Accusative	saṃsevanam	saṃsevane	saṃsevanāni
Instrumental	saṃsevanena	saṃsevanābhyām	saṃsevanaiḥ
Dative	saṃsevanāya	saṃsevanābhyām	saṃsevanebhyaḥ
Ablative	saṃsevanāt	saṃsevanābhyām	saṃsevanebhyaḥ
Genitive	saṃsevanasya	saṃsevanayoḥ	saṃsevanānām
Locative	saṃsevane	saṃsevanayoḥ	saṃsevaneṣu

Compound saṃsevana -

Adverb -saṃsevanam -saṃsevanāt