biec[7], bied[7], berd[7], debr[7], ciec[6], cedi[6], cedr[6], cred[6], brei[6], brie[6], birr[6], dier[5],
bid[6], ber[5], erb[5], reb[5], brr[5], cie[4], cer[4], der[4], red[4], drr[4], rei[3],
be[4], bi[4], ce[3], de[3], ci[3], id[3], er[2], re[2],
