owsa[4], sowa[4], ssaw[4],
osa[3], sas[3], sos[3], ewa[3], owa[3], ewo[3], owe[3], swa[3], was[3], swe[3], wow[3],
eo[2], as[2], es[2], se[2], os[2], ew[2], we[2],
