ergs[5], gers[5], grus[5], guru[5], sure[4], ures[4], user[4],
erg[4], ger[4], reg[4], ges[4], gur[4], ers[3], res[3], reu[3], ure[3], rus[3], sur[3], urs[3],
er[2], re[2], es[2], ur[2],
