endu[7], desu[7], sunn[6], sedn[5], sens[4], news[4],
edu[6], ued[6], dnu[6], nud[6], dwu[6], esu[5], snu[5], sus[5], wun[5], suw[5], den[4], end[4], des[4], sen[3], wen[3], swe[3],
ud[5], nu[4], su[4], wu[4], de[3], en[2], es[2], se[2], ew[2], we[2],
