-er b-u bbb bbe bbi bbk bbl bbr bbs bbu be- beb bee bei bek bel ber bes beu bi- bib bie bii bik bil bir bis biu bkb bke bkk bkl bkr bks blb ble bli blk bll blr bls blu brb bre bri brk brl brr brs bru bsb bse bsi bsk bsl bsr bss bsu bub bue bui buk bul bur bus buu ebb ebe ebi ebk ebl ebr ebs ebu eeb eee eek eel eer ees eib eie eii eik eil eir eis eiu ekb eke eki ekl ekr eks eku elb ele eli elk ell elr els elu erb ere eri erk erl err ers eru es- esb ese esi esk esl esr ess esu eu- eub eue eui eul eur eus ibb ibe ibi ibk ibl ibr ibs ibu ie- iee iei iek iel ier ies iib iie iii iil iir iis iiu ikb ike iki ikk ikl ikr iks iku il- ilb ile ili ilk ill ilr ils ilu ir- irb ire iri irk irl irr irs iru is- isb ise isi isk isl isr iss isu iu- iub iue iui iur ius kbb kbe kbi kbk kbl kbr kbs kbu ke- keb kee kei kek kel ker kes kib kie kii kik kil kir kis kiu kkb kke kki kkk kkl kkr kks kku kl- klb kli klr kls klu kri krk krl krr krs kru ksb kse ksi ksk ksl ksr kss ksu kub kue kui kuk kul kur kus kuu lbb lbe lbi lbk lbl lbr lbs lbu leb lee lei lek lel ler les leu lib lie lii lik lil lir lis liu lkb lkl lkr lks llb lle lli llk lll llr lls llu lrb lri lrk lrr lrs lru lsb lse lsi lsk lsl lsr lss lsu lub lue lui luk lul lur lus luu rbb rbe rbi rbk rbl rbr rbs rbu re- reb ree rei rek rel rer res reu rib rie rii rik ril rir ris rkb rke rkk rks rku rle rli rll rlr rls rlu rrb rri rrk rrl rrr rrs rru rsb rse rsi rsk rsl rsr rss rsu rub rue rui ruk rur rus ruu sbb sbe sbi sbk sbl sbr sbs sbu se- seb see sei sek sel ser ses seu sib sie sii sik sil sir sis siu sk- skb ske ski skk skl skr sks sku slb sle sli slk sll slr sls slu sr- srb sre sri srk srl srr srs ss- ssb sse ssi ssk ssl ssr sss ssu sub sue sui suk sul sur sus suu ubb ube ubi ubk ubl ubr ubs ubu ueb uee uei uel uer ues uib uie uii uil uir uis uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulr uls ulu ur- urb ure uri urk url urr urs uru usb use usi usk usl usr uss usu uue uur uus uuu

bbbb bbbs bbeb bblb bbls bebb bebe bebi beeb beek beel beer bees beik beil beir beis beke beki beks bele beli belk bell bels belu bere beri berk berr bers beru bes- bese besk bess beuk beur bibb bibe bibi bibl bibs bieb biel bier bies bieu biis bike biku bile bili bilk bill bils bilu birb bire biri birk birl birr birs biru bis- bise bisk bisl biss bisu bleb blee blei blek bles bleu blik blir blis blkb blls blss blub blue blur blus breb bree brei brek brel brer bres brie brik bril bris brkb brls brrr brrs brsb brsr brue brus bseb bsee bser bses bsse bubb bube bubi bubs bubu buel buer bueu buie buik buir buis buiu buke buki bukk buku bulb bule buli bulk bull buls bulu bur- burb bure buri burk burl burr burs buru buse busi busk buss busu buus ebbr ebbs ebel eber ebes ebis ebli ebru ebul ebur ebus eeee eees eeke eeks eele eels eers eese eesi eesk eiei eier eies eike eiki eiks eile eire eirs eise eisk eiss ekeb ekek eker ekes ekis ekki eksi ekur el-b elbe elbi elbu elee elek eler eles elie elik elil elis elke elki elks elle elli ells ellu else elsu elue elui elul elus erbb erbe ereb erei erel erer eres erie erik eril eris eriu erke erki erks erle erli erll erre errs erse ersi erub erur erus esbs esee esek esel eser eses esie esik esil esis eske esks esku esli esri esse essi essl essu esui esus eubi euer eule eur- eure euse i-be ibes ibie ibis ible ibri ibss ibus ieie iele iels iere ieri iers iesi iesr iesu iies iiie iiii iiis iirs iisi iisr iisu ikee iker ikes ikki ikri iksu ikue ile- ilek iler iles ilie ilir ilis ilke ilki ilks ilku ill- ille illi ills ilre ilse ilus irbe iree irel irer ires iri- irie iril iris irki irks irlb irre irri irrs irse irul irus isbe isbl iseb isee isel iser ises isie isil isis isku isle isls isri isse issi issr isss issu isus iuel iuiu iuse iuss kbbb kbbe kbbi kbbk kbbl kbbr kbbs kbbu kbeb kbee kbek kbel kber kbes kbib kbie kbik kbil kbis kbiu kbkb kbkk kbkl kbkr kblb kble kbll kblr kbls kblu kbrb kbre kbri kbrk kbrl kbru kbsb kbsi kbsk kbsr kbss kbsu kbub kbue kbuk kbul kbur kbus kbuu kebb kebe kebi kebr kebu keek keel keer kees keib keii keik keil keir keis kekb keke keki kekl keks keku kele keli kelk kell kelu ker- kerb kere keri kerk kerl kerr kers keru kesb kesi kesk kesr kess keul keur keus kibb kibe kibi kibl kibr kibs kibu kiel kier kies kieu kiii kiik kiis kiiu kiki kikk kikr kiku kilb kile kili kilk kill kilr kirb kiri kirk kirr kirs kiru kise kisi kisk kisl kisr kiss kisu kiul kiur kiuu kkbb kkbe kkbi kkbl kkbr kkbs kkik kkkk kklb kkli kkll kkls kkrb kkre kkrk kkrl kkrr kkrs