cerek[7], ceres[6], reces[6], serce[6], esker[6], serek[6],
keks[6], erce[5], erek[5], esce[5], esek[5], serc[5], kres[5], kser[5], reks[5], eser[4],
cek[5], kek[5], cer[4], ker[4], rek[4], ces[4], eks[4], ser[3],
ce[3], ee[2], er[2], re[2], es[2], se[2],
