busy[9], bisu[8], bisy[7], suwy[7], wisu[6], siwy[5], wisy[5],
bus[7], bis[5], siu[5], suw[5], iwy[4], siw[3], wis[3], wsi[3],
bu[6], by[5], bi[4], su[4], wu[4], wy[3], si[2], iw[2],
