-er b-u bbb bbe bbi bbk bbl bbn bbr bbt bbu be- beb bee bei bek bel ben ber bet beu bi- bib bie bii bik bil bin bir bit biu bkb bke bkk bkl bkn bkr bkt blb ble bli blk bll bln blr blt blu bnb bne bni bnk bnl bnn bnr bnt bnu brb bre bri brk brl brn brr brt bru btb bte bti btk btl btn btr btt btu bub bue bui buk bul bun bur but buu ebb ebe ebi ebk ebl ebn ebr ebt ebu eeb eee eek eel een eer eet eib eie eii eik eil ein eir eit eiu ekb eke eki ekl ekr ekt eku elb ele eli elk ell eln elr elt elu en- enb ene eni enk enl enn enr ent enu erb ere eri erk erl ern err ert eru etb ete eti etk etl etn etr ett etu eu- eub eue eui eul eun eur eut ibb ibe ibi ibk ibl ibn ibr ibt ibu ie- iee iei iek iel ien ier iet iib iie iii iil iin iir iit iiu ikb ike iki ikk ikl ikr ikt iku il- ilb ile ili ilk ill iln ilr ilt ilu in- inb ine ini ink inl inn inr int inu ir- irb ire iri irk irl irn irr irt iru itb ite iti itk itl itn itt itu iu- iub iue iui iur iut k-t kbb kbe kbi kbk kbl kbn kbr kbu ke- keb kee kei kek kel ken ker ket kib kie kii kik kil kin kir kit kiu kkb kke kki kkk kkl kkn kkr kkt kku kl- klb kli klr klt klu kn- kne kni knk knl knn knr knt knu kri krk krl krn krr krt kru ktb kte ktk ktl ktn ktr ktt ktu kub kue kui kuk kul kun kur kut kuu lbb lbe lbi lbk lbl lbr lbt lbu leb lee lei lek lel len ler let leu lib lie lii lik lil lin lir lit liu lkb lkl lkr lkt llb lle lli llk lll lln llr llt llu lnb lne lni lnk lnl lnn lnr lnt lnu lrb lri lrk lrn lrr lrt lru ltb lte lti ltk ltl ltr ltt ltu lub lue lui luk lul lun lur lut luu n-i nbb nbe nbi nbk nbl nbn nbr nbt nbu ne- neb nee nei nek nel nen ner net neu nib nie nii nik nil nin nir nit niu nke nki nkk nkn nkr nkt nku nlb nle nli nlk nll nln nlr nlt nlu nnb nne nni nnk nnl nnn nnt nnu nrb nre nri nrk nrl nrn nrr nrt nru ntb nte nti ntk ntn ntr ntt ntu nub nue nui nuk nul nun nur nut nuu rbb rbe rbi rbk rbl rbn rbr rbt rbu re- reb ree rei rek rel ren rer ret reu rib rie rii rik ril rin rir rit rkb rke rkk rkt rku rle rli rll rln rlr rlt rlu rnb rni rnn rnr rnt rnu rrb rri rrk rrl rrn rrr rrt rru rtb rte rti rtk rtl rtn rtr rtt rtu rub rue rui ruk run rur rut ruu tbb tbe tbi tbk tbl tbn tbr tbt tbu te- teb tee tei tek tel ten ter tet teu tib tie tii tik til tin tir tit tiu tkb tke tkk tkl tkr tkt tle tli tlk tll tln tlr tlt tlu tnb tne tni tnk tnl tnn tnr tnt trb tre tri trk trl trn trr trt tru ttb tte tti ttk ttl ttn ttr ttt ttu tub tue tui tuk tul tun tur tut tuu ubb ube ubi ubk ubl ubn ubr ubt ubu ueb uee uei uel uen uer uet uib uie uii uil uin uir uit uiu ukb uke uki ukk ukl ukn ukr uku ulb ule uli ulk ull uln ulr ult ulu un- unb une uni unk unl unn unr unt unu ur- urb ure uri urk url urn urr urt uru utb ute uti utk utl utn utr utt utu uue uun uur uut uuu