etos[5], oset[5], seto[5], weto[5], stew[5],
eto[4], set[4], sto[4], twe[4], wet[4], wte[4], ewo[3], owe[3], swe[3],
et[3], te[3], ot[3], to[3], ts[3], eo[2], es[2], se[2], os[2], ew[2], we[2],
