boyu[9], uboi[8], uowy[7], uowi[6],
obu[7], boy[6], oby[6], boi[5], obi[5], iwy[4], wii[3], iwo[3], owi[3], wio[3],
bu[6], by[5], bi[4], bo[4], wu[4], wy[3], ii[2], iw[2],
