b-u bbb bbe bbg bbi bbk bbn bbo bbu be- beb bee beg bei bek ben beo beu bgb bge bgg bgi bgk bgn bgo bgu bi- bib bie big bii bik bin bio biu bkb bke bkg bkk bkn bko bnb bne bng bni bnk bnn bno bnu bob boe bog boi bok bon boo bou bub bue bug bui buk bun buo buu ebb ebe ebg ebi ebk ebn ebo ebu eeb eee eeg eek een eeo egb ege egg egi egn ego egu eib eie eig eii eik ein eio eiu ekb eke ekg eki eko eku en- enb ene eng eni enk enn eno enu eo- eob eoe eog eoi eok eon eoo eou eu- eub eue eug eui eun gbe gbg gbi gbk gbn gbo gbu ge- geb gee geg gei gek gen geo geu ggb ggg ggi ggn ggo ggu gib gie gig gii gik gin gio giu gkb gkn gko gnb gne gni gnn gno gnu gob goe gog goi gok gon goo gou gu- gub gue gug gui guk gun guo guu ibb ibe ibg ibi ibk ibn ibo ibu ie- iee ieg iei iek ien igb ige igg igi igk ign igo igu iib iie iii iin iio iiu ikb ike iki ikk iko iku in- inb ine ing ini ink inn ino inu io- iob ioe iog ioi ion ioo iou iu- iub iue iug iui kbb kbe kbi kbk kbn kbo kbu ke- keb kee keg kei kek ken keo kgb kgi kgo kgu kib kie kig kii kik kin kio kiu kkb kke kki kkk kkn kku kn- kne kng kni knk knn kno knu kob koe kog koi kok kon koo kou kub kue kug kui kuk kun kuu n-i nbb nbe nbg nbi nbk nbn nbo nbu ne- neb nee neg nei nek nen neo neu ngb nge ngg ngi ngk ngn ngo ngu nib nie nig nii nik nin nio niu nke nki nkk nkn nko nku nnb nne nng nni nnk nnn nno nnu no- nob noe nog noi nok non noo nou nub nue nug nui nuk nun nuo nuu o-i ob- obb obe obg obi obk obn obo obu oeb oee oeg oei oen oeo oge ogg ogi ogn ogo oib oie oii oik oin oio oiu okb oke okg oki okk oko oku on- onb one ong oni onk onn ono onu oo- oob oog ooi ook oon ooo ou- oue oui ouk oun ouo ubb ube ubg ubi ubk ubn ubo ubu ueb uee ueg uei uen ugb uge ugg ugi ugk ugn ugo ugu uib uie uig uii uin uio uiu ukb uke uki ukk ukn uku un- unb une ung uni unk unn uno unu uob uoe uog uok uon uoo uue uug uun uuu