felc[10], fere[8], free[8], dece[6], cele[6], elce[6], cedr[6], cred[6], redl[6], erce[5],
elf[8], fee[7], ref[7], cel[5], cle[5], lec[5], lee[4], cer[4], der[4], red[4],
ef[6], fe[6], ce[3], de[3], el[3], ee[2], er[2], re[2],
