-er b-u bbb bbe bbg bbi bbk bbl bbn bbr bbu be- beb bee beg bei bek bel ben ber beu bgb bge bgg bgi bgk bgl bgn bgr bgu bi- bib bie big bii bik bil bin bir biu bkb bke bkg bkk bkl bkn bkr blb ble blg bli blk bll bln blr blu bnb bne bng bni bnk bnl bnn bnr bnu brb bre brg bri brk brl brn brr bru bub bue bug bui buk bul bun bur buu ebb ebe ebg ebi ebk ebl ebn ebr ebu eeb eee eeg eek eel een eer egb ege egg egi egl egn egr egu eib eie eig eii eik eil ein eir eiu ekb eke ekg eki ekl ekr eku elb ele elg eli elk ell eln elr elu en- enb ene eng eni enk enl enn enr enu erb ere erg eri erk erl ern err eru eu- eub eue eug eui eul eun eur gbe gbg gbi gbk gbl gbn gbr gbu ge- geb gee geg gei gek gel gen ger geu ggb ggg ggi ggn ggr ggu gib gie gig gii gik gil gin gir giu gkb gkn glb gle glg gli glk gll gln glr glu gnb gne gni gnl gnn gnr gnu grb gre grg gri grk grl grn grr gru gu- gub gue gug gui guk gul gun gur guu ibb ibe ibg ibi ibk ibl ibn ibr ibu ie- iee ieg iei iek iel ien ier igb ige igg igi igk igl ign igr igu iib iie iii iil iin iir iiu ikb ike iki ikk ikl ikr iku il- ilb ile ilg ili ilk ill iln ilr ilu in- inb ine ing ini ink inl inn inr inu ir- irb ire irg iri irk irl irn irr iru iu- iub iue iug iui iur kbb kbe kbi kbk kbl kbn kbr kbu ke- keb kee keg kei kek kel ken ker kgb kgi kgl kgu kib kie kig kii kik kil kin kir kiu kkb kke kki kkk kkl kkn kkr kku kl- klb klg kli klr klu kn- kne kng kni knk knl knn knr knu krg kri krk krl krn krr kru kub kue kug kui kuk kul kun kur kuu lbb lbe lbg lbi lbk lbl lbr lbu leb lee leg lei lek lel len ler leu lgb lge lgg lgi lgk lgl lgn lgr lgu lib lie lig lii lik lil lin lir liu lkb lkg lkl lkr llb lle llg lli llk lll lln llr llu lnb lne lng lni lnk lnl lnn lnr lnu lrb lrg lri lrk lrn lrr lru lub lue lug lui luk lul lun lur luu n-i nbb nbe nbg nbi nbk nbl nbn nbr nbu ne- neb nee neg nei nek nel nen ner neu ngb nge ngg ngi ngk ngl ngn ngu nib nie nig nii nik nil nin nir niu nke nki nkk nkn nkr nku nlb nle nlg nli nlk nll nln nlr nlu nnb nne nng nni nnk nnl nnn nnu nrb nre nrg nri nrk nrl nrn nrr nru nub nue nug nui nuk nul nun nur nuu rbb rbe rbg rbi rbk rbl rbn rbr rbu re- reb ree reg rei rek rel ren rer reu rgb rge rgg rgi rgk rgn rgr rib rie rig rii rik ril rin rir rkb rke rkg rkk rku rle rlg rli rll rln rlr rlu rnb rng rni rnn rnr rnu rrb rrg rri rrk rrl rrn rrr rru rub rue rug rui ruk run rur ruu ubb ube ubg ubi ubk ubl ubn ubr ubu ueb uee ueg uei uel uen uer ugb uge ugg ugi ugk ugl ugn ugr ugu uib uie uig uii uil uin uir uiu ukb uke uki ukk ukl ukn ukr uku ulb ule ulg uli ulk ull uln ulr ulu un- unb une ung uni unk unl unn unr unu ur- urb ure urg uri urk url urn urr uru uue uug uun uur uuu