bece[7], bele[7], lesb[7], cele[6], elce[6], pele[6], spec[6], esce[5],
bel[6], ble[6], bee[5], cel[5], cle[5], lec[5], cep[5], lep[5], pel[5], ple[5], lee[4], ces[4], sep[4],
be[4], ce[3], el[3], pe[3], ee[2], es[2], se[2],
