esko[5], kose[5], noks[5], skon[5],
eko[4], nok[4], eks[4], kos[4], sok[4], eon[3], one[3], sen[3], nos[3], son[3],
ko[3], ok[3], en[2], eo[2], no[2], on[2], es[2], se[2], os[2],
