berd[7], debr[7], brem[7], peem[6], rebe[6], derm[6], perm[6], erem[5],
bee[5], dem[5], ber[5], erb[5], reb[5], mee[4], der[4], red[4], mer[4], rem[4], per[4], rep[4],
be[4], de[3], em[3], me[3], pe[3], ee[2], er[2], re[2],
