sfen[8], neon[4], nowe[4], weno[4], news[4],
fen[7], nef[7], efo[7], fon[7], fes[7], fos[7], sof[7], eon[3], one[3], non[3], sen[3], nos[3], son[3], wen[3], ewo[3], owe[3], won[3], swe[3],
ef[6], fe[6], en[2], eo[2], no[2], on[2], es[2], se[2], os[2], ew[2], we[2],
