Decline the following nouns.
veniō, venīre, vēnī, ventum
gerō, gerere, gessī, gestum
crēdō, crēdere, crēdidī, crēditum
cōnsul, cōnsulis, m. – consul
caput, capitis, n. – head
fortitūdō, fortitūdinis, f. – courage
nox, noctis, f. – night