wbici[8], widii[6],
bidy[8], bici[7], diwy[6], widy[6], wici[5],
dyb[7], bid[6], cyi[5], idy[5], wic[4], diw[4], wid[4], iwy[4], iii[3], wii[3],
by[5], bi[4], ci[3], id[3], wy[3], ii[2], iw[2],
