bub[9], bud[8], pub[8], bib[7], dup[7], pud[7], bus[7], bid[6], idu[6], piu[6], psu[6], spu[6], dip[5], bis[5], siu[5], dis[4], psi[4],
bu[6], ud[5], bi[4], su[4], id[3], pi[3], si[2],
