efeb[10], febr[10], fere[8], free[8], geek[7], brek[7], grek[7], rebe[6], krep[6], erek[5],
pfe[8], fee[7], beg[7], ref[7], bek[6], keg[6], bee[5], ber[5], erb[5], reb[5], erg[5], ker[4], rek[4], per[4], rep[4],
ef[6], fe[6], be[4], pe[3], ee[2], er[2], re[2],
