oase[5], aase[4], anse[4], asen[4], nase[4], seen[4],
ons[4], nee[3], aas[3], ase[3], see[3], ans[3], sen[3],
on[3], os[3], so[3], aa[2], an[2], na[2], ne[2], as[2], es[2],
