MASCULINE FEMININE NEUTER SINGULAR NOM. severus severa severum GEN. severi severae severi DAT. severo severae severo ACC. severum severam severum ABL. severo severa severo PLURAL NOM. severi severae severa GEN. severorum severarum severorum DAT. severis severis severis ACC. severos severas severa ABL. severis severis severis