fob[9], fok[8], fos[7], sof[7], cob[6], bok[6], bom[6], mob[6], koc[5], com[5], moc[5], kom[5], soc[4], kos[4], sok[4], osm[4], som[4],
bo[4], co[3], ko[3], ok[3], om[3], os[2],
