ksenon[7],
konne[6], ekson[6], keson[6], nesko[6], nosek[6], senon[5], sosen[5],
esko[5], kose[5], noks[5], skon[5], seks[5], skos[5], neon[4], sens[4],
eko[4], nok[4], eks[4], kos[4], sok[4], eon[3], one[3], non[3], sen[3], nos[3], son[3], sos[3],
ko[3], ok[3], en[2], eo[2], no[2], on[2], es[2], se[2], os[2],
