bies[6], esie[4], ewie[4], siew[4], siwe[4], wsie[4], wiew[4],
bee[5], bis[5], web[5], eis[3], sie[3], ewe[3], wie[3], swe[3], siw[3], wis[3], wsi[3],
be[4], bi[4], ee[2], es[2], se[2], si[2], ew[2], we[2], iw[2],
