echo[7], heco[7], ocet[6],
che[6], ech[6], hec[6], hoc[6], och[6], het[6], hot[6], oho[5], eto[4], oto[4],
eh[4], he[4], ho[4], oh[4], ce[3], co[3], et[3], te[3], ot[3], to[3], eo[2],
