bufo[12], fobu[12], osuw[6], owsu[6],
buf[11], fob[9], ufo[9], fus[9], fos[7], sof[7], obu[7], bus[7], sou[5], suw[5],
fu[8], uf[8], bu[6], bo[4], su[4], wu[4], os[2],
