efeb[10], faen[8], fena[8], bace[7], bece[7], bean[6], cena[5],
caf[8], efa[7], fee[7], fan[7], fen[7], nef[7], cab[6], bee[5], ban[5], ben[5], cna[4], cen[4], cne[4],
fa[6], ef[6], fe[6], ba[4], be[4], ce[3], ee[2], na[2], en[2],
