ibis[6], brwi[6], idis[5], drwi[5], siwi[4], wisi[4],
bib[7], bid[6], bis[5], dis[4], diw[4], wid[4], sir[3], wii[3], wir[3], siw[3], wis[3], wsi[3],
bi[4], id[3], ii[2], si[2], iw[2],
