b-u bbb bbg bbi bbl bbu bgb bgg bgi bgl bgu bi- bib big bii bil biu blb blg bli bll blu bub bug bui bul buu gbg gbi gbl gbu ggb ggg ggi ggu gib gig gii gil giu glb glg gli gll glu gu- gub gug gui gul guu ibb ibg ibi ibl ibu igb igg igi igl igu iib iii iil iiu il- ilb ilg ili ill ilu iu- iub iug iui lbb lbg lbi lbl lbu lgb lgg lgi lgl lgu lib lig lii lil liu llb llg lli lll llu lub lug lui lul luu ubb ubg ubi ubl ubu ugb ugg ugi ugl ugu uib uig uii uil uiu ulb ulg uli ull ulu uug uuu