-er b-u bbb bbe bbf bbi bbk bbn bbr bbs bbt bbu be- beb bee bef bei bek ben ber bes bet beu bfb bfe bff bfi bfn bfr bfs bft bfu bi- bib bie bif bii bik bin bir bis bit biu bkb bke bkf bkk bkn bkr bks bkt bnb bne bnf bni bnk bnn bnr bns bnt bnu brb bre brf bri brk brn brr brs brt bru bsb bse bsf bsi bsk bsn bsr bss bst bsu btb bte btf bti btk btn btr bts btt btu bub bue buf bui buk bun bur bus but buu ebb ebe ebf ebi ebk ebn ebr ebs ebt ebu eeb eee eef eek een eer ees eet ef- efb efe eff efi efr efs eft eib eie eif eii eik ein eir eis eit eiu ekb eke ekf eki ekr eks ekt eku en- enb ene enf eni enk enn enr ens ent enu erb ere erf eri erk ern err ers ert eru es- esb ese esf esi esk esn esr ess est esu etb ete etf eti etk etn etr ets ett etu eu- eub eue euf eui eun eur eus eut fbb fbe fbf fbi fbk fbn fbr fbs fbt fbu feb fee fef fei fek fen fer fes fet feu ffe fff ffi ffk ffn ffr ffs fft ffu fib fie fif fii fik fin fir fis fit fiu fkb fkf fki fkk fkt fnb fne fnf fni fnk fnn fnr fns fnt fnu frb fre frf fri frk frn frr frs frt fru fsb fse fsf fsi fsk fsn fsr fss fst fsu ftb fte ftf fti ftk ftn ftr fts ftt ftu fub fue fuf fui fuk fun fur fus fut fuu i-f ibb ibe ibf ibi ibk ibn ibr ibs ibt ibu ie- iee ief iei iek ien ier ies iet ifb ife iff ifi ifn ifr ifs ift ifu iib iie iif iii iin iir iis iit iiu ikb ike ikf iki ikk ikr iks ikt iku in- inb ine inf ini ink inn inr ins int inu ir- irb ire irf iri irk irn irr irs irt iru is- isb ise isf isi isk isn isr iss ist isu itb ite itf iti itk itn its itt itu iu- iub iue iui iur ius iut k-t kbb kbe kbf kbi kbk kbn kbr kbs kbu ke- keb kee kef kei kek ken ker kes ket kff kfi kfs kfu kib kie kif kii kik kin kir kis kit kiu kkb kke kki kkk kkn kkr kks kkt kku kn- kne knf kni knk knn knr knt knu krf kri krk krn krr krs krt kru ksb kse ksf ksi ksk ksn ksr kss kst ksu ktb kte ktf ktk ktn ktr kts ktt ktu kub kue kui kuk kun kur kus kut kuu n-i nbb nbe nbf nbi nbk nbn nbr nbs nbt nbu ne- neb nee nef nei nek nen ner nes net neu nfb nfe nff nfi nfk nfn nfr nfs nft nfu nib nie nif nii nik nin nir nis nit niu nke nkf nki nkk nkn nkr nks nkt nku nnb nne nnf nni nnk nnn nns nnt nnu nrb nre nrf nri nrk nrn nrr nrs nrt nru nsb nse nsf nsi nsk nsn nsr nss nst nsu ntb nte ntf nti ntk ntn ntr nts ntt ntu nub nue nui nuk nun nur nus nut nuu rbb rbe rbf rbi rbk rbn rbr rbs rbt rbu re- reb ree ref rei rek ren rer res ret reu rfb rfe rff rfi rfk rfn rfr rfs rft rfu rib rie rif rii rik rin rir ris rit rkb rke rkf rkk rks rkt rku rnb rni rnn rnr rns rnt rnu rrb rrf rri rrk rrn rrr rrs rrt rru rsb rse rsf rsi rsk rsn rsr rss rst rsu rtb rte rtf rti rtk rtn rtr rts rtt rtu rub rue ruf rui ruk run rur rus rut ruu sbb sbe sbf sbi sbk sbn sbr sbs sbt sbu se- seb see sef sei sek sen ser ses set seu sfb sfe sff sfi sfk sfn sfr sfs sft sfu sib sie sif sii sik sin sir sis sit siu sk- skb ske skf ski skk skr sks skt sku snb sne snf sni snk snn snr sns snt snu sr- srb sre srf sri srk srn srr srs srt ss- ssb sse ssf ssi ssk ssn ssr sss sst ssu stb ste stf sti stk stn str sts stt stu sub sue suf sui suk sun sur sus sut suu tbb tbe tbf tbi tbk tbn tbr tbs tbt tbu te- teb tee tef tei tek ten ter tes tet teu tfb tfe tff tfi tfk tfn tfr tfs tft tfu tib tie tif tii tik tin tir tis tit tiu tkb tke tkk tkr tks tkt tnb tne tnf tni tnk tnn tnr tns tnt trb tre trf tri trk trn trr trs trt tru tsb tse tsf tsi tsk tsn tsr tss tst tsu ttb tte ttf tti ttk ttn ttr tts ttt ttu tub tue tuf tui tuk tun tur tus tut tuu ubb ube ubf ubi ubk ubn ubr ubs ubt ubu ueb uee uef uei uen uer ues uet ufe uff ufi ufn ufr ufs uft ufu uib uie uif uii uin uir uis uit uiu ukb uke ukf uki ukk ukn ukr uku un- unb une unf uni unk unn unr uns unt unu ur- urb ure urf uri urk urn urr urs urt uru usb use usf usi usk usn usr uss ust usu utb ute utf uti utk utn utr uts utt utu uue uun uur uus uut uuu