-er b-u bbb bbe bbi bbk bbl bbm bbr bbu be- beb bee bei bek bel bem ber beu bi- bib bie bii bik bil bim bir biu bkb bke bkk bkl bkm bkr blb ble bli blk bll blm blr blu bmb bme bmi bmk bml bmm bmr bmu brb bre bri brk brl brm brr bru bub bue bui buk bul bum bur buu ebb ebe ebi ebk ebl ebm ebr ebu eeb eee eek eel eem eer eib eie eii eik eil eim eir eiu ekb eke eki ekl ekr eku elb ele eli elk ell elm elr elu em- emb eme emi emk eml emm emr emu erb ere eri erk erl erm err eru eu- eub eue eui eul eur ibb ibe ibi ibk ibl ibm ibr ibu ie- iee iei iek iel iem ier iib iie iii iil iim iir iiu ikb ike iki ikk ikl ikr iku il- ilb ile ili ilk ill ilm ilr ilu im- imb ime imi iml imm imu ir- irb ire iri irk irl irm irr iru iu- iub iue iui ium iur kbb kbe kbi kbk kbl kbm kbr kbu ke- keb kee kei kek kel kem ker kib kie kii kik kil kim kir kiu kkb kke kki kkk kkl kkm kkr kku kl- klb kli klm klr klu kmb kme kmi kmk kml kmm kmu kri krk krl krr kru kub kue kui kuk kul kum kur kuu lbb lbe lbi lbk lbl lbm lbr lbu leb lee lei lek lel lem ler leu lib lie lii lik lil lim lir liu lkb lkl lkr llb lle lli llk lll llm llr llu lmb lme lmi lmk lml lmm lmr lmu lrb lri lrk lrm lrr lru lub lue lui luk lul lum lur luu m-r mbb mbe mbi mbk mbl mbm mbr mbu meb mee mei mek mel mem mer meu mi- mib mie mii mik mil mim mir miu mkb mke mkk mkl mkm mkr mku mlb mle mli mlk mll mlm mlr mlu mmb mme mmi mmk mml mmm mmr mmu mrb mre mri mrk mrl mrm mrr mru mub mue mui muk mul mum mur muu rbb rbe rbi rbk rbl rbm rbr rbu re- reb ree rei rek rel rem rer reu rib rie rii rik ril rim rir rkb rke rkk rkm rku rle rli rll rlm rlr rlu rmb rme rmi rml rmm rmr rrb rri rrk rrl rrm rrr rru rub rue rui ruk rum rur ruu ubb ube ubi ubk ubl ubr ubu ueb uee uei uel uem uer uib uie uii uil uim uir uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulm ulr ulu um- umb ume umi uml umm umr umu ur- urb ure uri urk url urm urr uru uue uum uur uuu

bbbb bbeb bblb bebb bebe bebi beeb beek beel beem beer beik beil beim beir beke beki bele beli belk bell belm belu beme bemu bere beri berk berm berr beru beuk beur bibb bibe bibi bibl bieb biel bier bieu bike biku bile bili bilk bill bilu birb bire biri birk birl birr biru bleb blee blei blek blem bleu blik blim blir blkb blme blub blue blum blur bmir bmmi breb bree brei brek brel brem brer brie brik bril brim brkb brrm brrr brue brum bubb bube bubi bubu buel buem buer bueu buie buik buir buiu buke buki bukk buku bulb bule buli bulk bull bulu bum- bumb bur- burb bure buri burk burl burm burr buru ebbr ebel eber ebli ebru ebul ebur eeee eeke eele eiei eier eike eiki eile eime eimi eire ekeb ekek eker ekki ekur el-b elbe elbi elbu elee elek elem eler elie elik elil elim elke elki elle elli ellu elme elml elue elui elul elum embe embi embr emek emel emer emeu emii emil emim emir emle emlm emme emmi emml emmu emre emul erbb erbe ereb erei erel erem erer erie erik eril erim eriu erke erki erle erli erll erme erre erub erum erur eubi euer eule eur- eure i-be ibbm ibie ibim ible ibml ibri ieie iele ieme iere ieri iiie iiii iium ikee iker ikki ikri ikue ilbm ile- ilek iler ilie ilir ilke ilki ilku ill- ille illi ilme ilmr ilre ilrm ilum imbe imbi imel imer imir imli imme immi imre imri imrr imue irbe irbm iree irel irem irer iri- irie iril irki irlb irre irri irul iuel iuiu kbbb kbbe kbbi kbbk kbbl kbbm kbbr kbbu kbeb kbee kbek kbel kber kbib kbie kbik kbil kbim kbiu kbkb kbkk kbkl kbkr kblb kble kbll kblm kblr kblu kbmb kbme kbmi kbmr kbrb kbre kbri kbrk kbrl kbru kbub kbue kbuk kbul kbur kbuu kebb kebe kebi kebr kebu keek keel keem keer keib keii keik keil keir kekb keke keki kekl keku kele keli kelk kell kelm kelu kemb keme kemi kemm kemr kemu ker- kerb kere keri kerk kerl kerm kerr keru keul keur kibb kibe kibi kibl kibr kibu kiel kier kieu kiii kiik kiiu kiki kikk kikr kiku kilb kile kili kilk kill kilm kilr kimb kime kimi kiml kimm kirb kiri kirk kirr kiru kiul kiur kiuu kkbb kkbe kkbi kkbl kkbr kkik kkim kkkk kklb kkli kkll kkmi kkmk kkml kkmr kkrb kkre kkrk kkrl kkrr kkuu klbb klbe klbl klbm klbu kleb klee klek klem kler klib klik klil klim klir kliu klkk klkl klkr kllb klle kllk klmi klmk klmm klmr klrk klrm klrr klru klub klue kluk klum klur kluu kmbi kmbl kmbr kmei kmel kmem kmer kmil kmke kmkk kmkl kmlb kmle kmlk kmlu kmme kmmk kmml kmmm kmmr kmrb kmri kmrr kmue kmul kmur krbb krbe krbi krbk krbl krbm krbr kreb kree krei krek krem kreu krib krik kril krim krke krki krkk krkr krku krle krmb krme krml krmr krrb krre krri krrk krrl krrm krrr krue krui kruk krul krum krur