bibo[8], obie[6], webo[6], iwie[4], wiei[4],
bib[7], bob[7], boi[5], obi[5], web[5], wie[3], wii[3], ewo[3], owe[3], iwo[3], owi[3], wio[3],
be[4], bi[4], bo[4], ii[2], eo[2], ew[2], we[2], iw[2],
