cedr[6], cred[6], merc[6], derm[6], serc[5], dres[5],
dem[5], cer[4], der[4], red[4], mer[4], rem[4], ces[4], des[4], mes[4], sem[4], ser[3],
ce[3], de[3], em[3], me[3], er[2], re[2], es[2], se[2],
