retem[7], terem[7],
derm[6], metr[6], term[6], trem[6], erem[5], eter[5], tere[5],
dem[5], edt[5], met[5], mee[4], der[4], red[4], mer[4], rem[4], ret[4], ter[4],
de[3], em[3], me[3], et[3], te[3], ee[2], er[2], re[2],
