bece[7], rebe[6], bers[6], erce[5], esce[5], serc[5], eser[4],
łeb[7], ceł[6], bee[5], ber[5], erb[5], reb[5], cer[4], ces[4], ser[3],
be[4], eł[4], ce[3], ee[2], er[2], re[2], es[2], se[2],