freu[7], rufe[7], ufer[7], ufre[7], rufs[7], surf[7], sure[4], ures[4], user[4],
fes[6], ruf[6], ers[3], res[3], reu[3], ure[3], rus[3], sur[3], urs[3],
er[2], re[2], es[2], ur[2],
