geek[7], grek[7], gren[6], negr[6], reng[6], erce[5], erek[5],
keg[6], cek[5], gen[5], erg[5], cen[4], cne[4], cer[4], ker[4], rek[4], ner[3], ren[3],
ce[3], ee[2], en[2], er[2], re[2],
