nasco
Could not find nascen in Logeion dictionaries.
nascen Verb: future active indicative 2nd singular, Verb: present active imperative 2nd singular of nasco
nasco, ĕre, v. nascor fin.
nāsco, ere = nasci, Cato r. r. 151, 4 zw.
nāscō, ĕre = nascor : Cato Agr. 151, 4 [contesté ; germinasco Keil ].