biec[7], ciec[6], ciep[6], pice[6], piec[6], brei[6], brie[6], crep[6], peri[5],
cep[5], cip[5], pic[5], ber[5], erb[5], reb[5], cie[4], pie[4], cer[4], per[4], rep[4], rei[3],
be[4], bi[4], ce[3], ci[3], pe[3], pi[3], er[2], re[2],
