nerz[6], zerr[6], zens[6], zers[6], renn[4], senn[4], rens[4], sens[4],
zen[5], erz[5], zer[5], ern[3], ren[3], sen[3], ers[3], res[3], ess[3],
ne[2], er[2], re[2], es[2],
