ferm[9], kpem[7], grek[7], merg[7], krem[6], merk[6], krep[6], perm[6],
pfe[8], ref[7], keg[6], gem[6], kem[5], erg[5], ker[4], rek[4], mer[4], rem[4], per[4], rep[4],
ef[6], fe[6], em[3], me[3], pe[3], er[2], re[2],
