leć[9], elf[8], pfe[8], ref[7], frr[7], hel[6], hep[6], lep[5], pel[5], ple[5], her[5], der[4], red[4], per[4], rep[4], drr[4], prr[4],
ef[6], fe[6], eh[4], he[4], de[3], el[3], pe[3], er[2], re[2],
