rebe[6], brei[6], brie[6], brew[6], brwi[6], ewie[4], rwie[4],
bee[5], ber[5], erb[5], reb[5], web[5], rei[3], ewe[3], wie[3], rew[3], wre[3], wir[3],
be[4], bi[4], ee[2], er[2], re[2], ew[2], we[2], iw[2],
