-er b-u bbb bbe bbi bbk bbn bbr bbs bbt bbu be- beb bee bei bek ben ber bes bet beu bi- bib bie bii bik bin bir bis bit biu bkb bke bkk bkn bkr bks bkt bnb bne bni bnk bnn bnr bns bnt bnu brb bre bri brk brn brr brs brt bru bsb bse bsi bsk bsn bsr bss bst bsu btb bte bti btk btn btr bts btt btu bub bue bui buk bun bur bus but buu ebb ebe ebi ebk ebn ebr ebs ebt ebu eeb eee eek een eer ees eet eib eie eii eik ein eir eis eit eiu ekb eke eki ekr eks ekt eku en- enb ene eni enk enn enr ens ent enu erb ere eri erk ern err ers ert eru es- esb ese esi esk esn esr ess est esu etb ete eti etk etn etr ets ett etu eu- eub eue eui eun eur eus eut ibb ibe ibi ibk ibn ibr ibs ibt ibu ie- iee iei iek ien ier ies iet iib iie iii iin iir iis iit iiu ikb ike iki ikk ikr iks ikt iku in- inb ine ini ink inn inr ins int inu ir- irb ire iri irk irn irr irs irt iru is- isb ise isi isk isn isr iss ist isu itb ite iti itk itn its itt itu iu- iub iue iui iur ius iut k-t kbb kbe kbi kbk kbn kbr kbs kbu ke- keb kee kei kek ken ker kes ket kib kie kii kik kin kir kis kit kiu kkb kke kki kkk kkn kkr kks kkt kku kn- kne kni knk knn knr knt knu kri krk krn krr krs krt kru ksb kse ksi ksk ksn ksr kss kst ksu ktb kte ktk ktn ktr kts ktt ktu kub kue kui kuk kun kur kus kut kuu n-i nbb nbe nbi nbk nbn nbr nbs nbt nbu ne- neb nee nei nek nen ner nes net neu nib nie nii nik nin nir nis nit niu nke nki nkk nkn nkr nks nkt nku nnb nne nni nnk nnn nns nnt nnu nrb nre nri nrk nrn nrr nrs nrt nru nsb nse nsi nsk nsn nsr nss nst nsu ntb nte nti ntk ntn ntr nts ntt ntu nub nue nui nuk nun nur nus nut nuu rbb rbe rbi rbk rbn rbr rbs rbt rbu re- reb ree rei rek ren rer res ret reu rib rie rii rik rin rir ris rit rkb rke rkk rks rkt rku rnb rni rnn rnr rns rnt rnu rrb rri rrk rrn rrr rrs rrt rru rsb rse rsi rsk rsn rsr rss rst rsu rtb rte rti rtk rtn rtr rts rtt rtu rub rue rui ruk run rur rus rut ruu sbb sbe sbi sbk sbn sbr sbs sbt sbu se- seb see sei sek sen ser ses set seu sib sie sii sik sin sir sis sit siu sk- skb ske ski skk skr sks skt sku snb sne sni snk snn snr sns snt snu sr- srb sre sri srk srn srr srs srt ss- ssb sse ssi ssk ssn ssr sss sst ssu stb ste sti stk stn str sts stt stu sub sue sui suk sun sur sus sut suu tbb tbe tbi tbk tbn tbr tbs tbt tbu te- teb tee tei tek ten ter tes tet teu tib tie tii tik tin tir tis tit tiu tkb tke tkk tkr tks tkt tnb tne tni tnk tnn tnr tns tnt trb tre tri trk trn trr trs trt tru tsb tse tsi tsk tsn tsr tss tst tsu ttb tte tti ttk ttn ttr tts ttt ttu tub tue tui tuk tun tur tus tut tuu ubb ube ubi ubk ubn ubr ubs ubt ubu ueb uee uei uen uer ues uet uib uie uii uin uir uis uit uiu ukb uke uki ukk ukn ukr uku un- unb une uni unk unn unr uns unt unu ur- urb ure uri urk urn urr urs urt uru usb use usi usk usn usr uss ust usu utb ute uti utk utn utr uts utt utu uue uun uur uus uut uuu