bibo[8], boni[6], niob[6], ibis[6], bios[6], bosi[6], snob[6], inni[4], inio[4], insi[4], sini[4], nosi[4], osin[4], sino[4],
bib[7], bob[7], bin[5], ibn[5], boi[5], obi[5], bon[5], bis[5], ino[3], oni[3], non[3], osi[3], sio[3], soi[3], nos[3], son[3],
bi[4], bo[4], ii[2], in[2], ni[2], no[2], on[2], si[2], os[2],
