b-u bbb bbe bbg bbi bbk bbo bbu be- beb bee beg bei bek beo beu bgb bge bgg bgi bgk bgo bgu bi- bib bie big bii bik bio biu bkb bke bkg bkk bko bob boe bog boi bok boo bou bub bue bug bui buk buo buu ebb ebe ebg ebi ebk ebo ebu eeb eee eeg eek eeo egb ege egg egi ego egu eib eie eig eii eik eio eiu ekb eke ekg eki eko eku eo- eob eoe eog eoi eok eoo eou eu- eub eue eug eui gbe gbg gbi gbk gbo gbu ge- geb gee geg gei gek geo geu ggb ggg ggi ggo ggu gib gie gig gii gik gio giu gkb gko gob goe gog goi gok goo gou gu- gub gue gug gui guk guo guu ibb ibe ibg ibi ibk ibo ibu ie- iee ieg iei iek igb ige igg igi igk igo igu iib iie iii iio iiu ikb ike iki ikk iko iku io- iob ioe iog ioi ioo iou iu- iub iue iug iui kbb kbe kbi kbk kbo kbu ke- keb kee keg kei kek keo kgb kgi kgo kgu kib kie kig kii kik kio kiu kkb kke kki kkk kku kob koe kog koi kok koo kou kub kue kug kui kuk kuu o-i ob- obb obe obg obi obk obo obu oeb oee oeg oei oeo oge ogg ogi ogo oib oie oii oik oio oiu okb oke okg oki okk oko oku oo- oob oog ooi ook ooo ou- oue oui ouk ouo ubb ube ubg ubi ubk ubo ubu ueb uee ueg uei ugb uge ugg ugi ugk ugo ugu uib uie uig uii uio uiu ukb uke uki ukk uku uob uoe uog uok uoo uue uug uuu