wessi[5],
esie[4], eses[4], ssie[4], ewie[4], siew[4], siwe[4], wsie[4],
eis[3], sie[3], ewe[3], wie[3], swe[3], siw[3], wis[3], wsi[3],
ee[2], es[2], se[2], si[2], ew[2], we[2], iw[2],
