-er b-u bbb bbe bbg bbi bbk bbn bbr bbu be- beb bee beg bei bek ben ber beu bgb bge bgg bgi bgk bgn bgr bgu bi- bib bie big bii bik bin bir biu bkb bke bkg bkk bkn bkr bnb bne bng bni bnk bnn bnr bnu brb bre brg bri brk brn brr bru bub bue bug bui buk bun bur buu ebb ebe ebg ebi ebk ebn ebr ebu eeb eee eeg eek een eer egb ege egg egi egn egr egu eib eie eig eii eik ein eir eiu ekb eke ekg eki ekr eku en- enb ene eng eni enk enn enr enu erb ere erg eri erk ern err eru eu- eub eue eug eui eun eur gbe gbg gbi gbk gbn gbr gbu ge- geb gee geg gei gek gen ger geu ggb ggg ggi ggn ggr ggu gib gie gig gii gik gin gir giu gkb gkn gnb gne gni gnn gnr gnu grb gre grg gri grk grn grr gru gu- gub gue gug gui guk gun gur guu ibb ibe ibg ibi ibk ibn ibr ibu ie- iee ieg iei iek ien ier igb ige igg igi igk ign igr igu iib iie iii iin iir iiu ikb ike iki ikk ikr iku in- inb ine ing ini ink inn inr inu ir- irb ire irg iri irk irn irr iru iu- iub iue iug iui iur kbb kbe kbi kbk kbn kbr kbu ke- keb kee keg kei kek ken ker kgb kgi kgu kib kie kig kii kik kin kir kiu kkb kke kki kkk kkn kkr kku kn- kne kng kni knk knn knr knu krg kri krk krn krr kru kub kue kug kui kuk kun kur kuu n-i nbb nbe nbg nbi nbk nbn nbr nbu ne- neb nee neg nei nek nen ner neu ngb nge ngg ngi ngk ngn ngu nib nie nig nii nik nin nir niu nke nki nkk nkn nkr nku nnb nne nng nni nnk nnn nnu nrb nre nrg nri nrk nrn nrr nru nub nue nug nui nuk nun nur nuu rbb rbe rbg rbi rbk rbn rbr rbu re- reb ree reg rei rek ren rer reu rgb rge rgg rgi rgk rgn rgr rib rie rig rii rik rin rir rkb rke rkg rkk rku rnb rng rni rnn rnr rnu rrb rrg rri rrk rrn rrr rru rub rue rug rui ruk run rur ruu ubb ube ubg ubi ubk ubn ubr ubu ueb uee ueg uei uen uer ugb uge ugg ugi ugk ugn ugr ugu uib uie uig uii uin uir uiu ukb uke uki ukk ukn ukr uku un- unb une ung uni unk unn unr unu ur- urb ure urg uri urk urn urr uru uue uug uun uur uuu