bisu[8], hiwu[8], ibis[6], wisu[6], siwi[4], wisi[4],
bub[9], hub[9], bib[7], bus[7], bis[5], his[5], siu[5], hiw[5], suw[5], wii[3], siw[3], wis[3], wsi[3],
bu[6], hu[6], bi[4], hi[4], su[4], wu[4], ii[2], si[2], iw[2],
