biec[7], bici[7], bisy[7], bies[6], ibis[6], cisy[6], syci[6], esic[5], sice[5], siec[5], cisi[5], siei[4],
bis[5], cyi[5], cie[4], ces[4], cis[4], sic[4], esy[4], eis[3], sie[3],
by[5], be[4], bi[4], ce[3], ci[3], ii[2], es[2], se[2], si[2],
