buby[11], biby[9], busy[9], bisu[8], bisy[7], bies[6],
bub[9], bib[7], bus[7], bis[5], esu[5], siu[5], esy[4], eis[3], sie[3],
bu[6], by[5], be[4], bi[4], su[4], es[2], se[2], si[2],
