open[5], peon[5], poen[5], nowe[4], weno[4],
nep[4], pen[4], eon[3], one[3], ewe[3], wen[3], ewo[3], owe[3], won[3],
pe[3], op[3], po[3], ee[2], en[2], eo[2], no[2], on[2], ew[2], we[2],
