ceber[8], nerce[6], rener[5],
bece[7], rebe[6], erce[5],
bee[5], ben[5], ber[5], erb[5], reb[5], brr[5], cen[4], cne[4], cer[4], ner[3], ren[3],
be[4], ce[3], ee[2], en[2], er[2], re[2],
