arce[5], cera[5], race[5], erce[5], arco[5], raco[5], cero[5], orce[5], oere[4],
car[4], rac[4], cer[4], era[3], rea[3], aro[3], ora[3], ero[3],
ce[3], co[3], ee[2], eo[2], ar[2], er[2], re[2], or[2], ro[2],
