esom[5], meso[5], ewom[5], mewo[5], mews[5],
mes[4], sem[4], osm[4], som[4], mew[4], ewo[3], owe[3], swe[3],
em[3], me[3], om[3], eo[2], es[2], se[2], os[2], ew[2], we[2],
