febr[10], fibr[10], efir[8], beki[7], brek[7], brei[6], brie[6], erki[5], kier[5], reki[5],
fik[8], ref[7], bek[6], ber[5], erb[5], reb[5], kei[4], kie[4], ker[4], rek[4], ikr[4], kir[4], rei[3],
ef[6], fe[6], fi[6], be[4], bi[4], ki[3], er[2], re[2],
