bose[6], boso[6], webo[6], epos[5], osep[5], peso[5], opos[5], ospo[5], sowo[4],
web[5], sep[4], osp[4], oso[3], ewo[3], owe[3], owo[3], swe[3],
be[4], bo[4], pe[3], op[3], po[3], eo[2], es[2], se[2], os[2], ew[2], we[2],
