fok[8], fon[7], fos[7], sof[7], jod[6], cod[5], doc[5], koc[5], dok[5], kod[5], jon[5], noc[4], dno[4], don[4], nok[4], soc[4], kos[4], sok[4], nos[3], son[3],
oj[4], co[3], do[3], od[3], ko[3], ok[3], no[2], on[2], os[2],
