-er b-u bbb bbe bbi bbk bbl bbr bbt bbu be- beb bee bei bek bel ber bet beu bi- bib bie bii bik bil bir bit biu bkb bke bkk bkl bkr bkt blb ble bli blk bll blr blt blu brb bre bri brk brl brr brt bru btb bte bti btk btl btr btt btu bub bue bui buk bul bur but buu ebb ebe ebi ebk ebl ebr ebt ebu eeb eee eek eel eer eet eib eie eii eik eil eir eit eiu ekb eke eki ekl ekr ekt eku elb ele eli elk ell elr elt elu erb ere eri erk erl err ert eru etb ete eti etk etl etr ett etu eu- eub eue eui eul eur eut ibb ibe ibi ibk ibl ibr ibt ibu ie- iee iei iek iel ier iet iib iie iii iil iir iit iiu ikb ike iki ikk ikl ikr ikt iku il- ilb ile ili ilk ill ilr ilt ilu ir- irb ire iri irk irl irr irt iru itb ite iti itk itl itt itu iu- iub iue iui iur iut k-t kbb kbe kbi kbk kbl kbr kbu ke- keb kee kei kek kel ker ket kib kie kii kik kil kir kit kiu kkb kke kki kkk kkl kkr kkt kku kl- klb kli klr klt klu kri krk krl krr krt kru ktb kte ktk ktl ktr ktt ktu kub kue kui kuk kul kur kut kuu lbb lbe lbi lbk lbl lbr lbt lbu leb lee lei lek lel ler let leu lib lie lii lik lil lir lit liu lkb lkl lkr lkt llb lle lli llk lll llr llt llu lrb lri lrk lrr lrt lru ltb lte lti ltk ltl ltr ltt ltu lub lue lui luk lul lur lut luu rbb rbe rbi rbk rbl rbr rbt rbu re- reb ree rei rek rel rer ret reu rib rie rii rik ril rir rit rkb rke rkk rkt rku rle rli rll rlr rlt rlu rrb rri rrk rrl rrr rrt rru rtb rte rti rtk rtl rtr rtt rtu rub rue rui ruk rur rut ruu tbb tbe tbi tbk tbl tbr tbt tbu te- teb tee tei tek tel ter tet teu tib tie tii tik til tir tit tiu tkb tke tkk tkl tkr tkt tle tli tlk tll tlr tlt tlu trb tre tri trk trl trr trt tru ttb tte tti ttk ttl ttr ttt ttu tub tue tui tuk tul tur tut tuu ubb ube ubi ubk ubl ubr ubt ubu ueb uee uei uel uer uet uib uie uii uil uir uit uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulr ult ulu ur- urb ure uri urk url urr urt uru utb ute uti utk utl utr utt utu uue uur uut uuu

bbbb bbeb bbet bblb bebb bebe bebi beeb beek beel beer beet beik beil beir beit beke beki bele beli belk bell belt belu bere beri berk berr bert beru bete beti bett betu beuk beur bibb bibe bibi bibl bieb biel bier biet bieu bike biku bile bili bilk bill bilt bilu birb bire biri birk birl birr birt biru bite bitt bitu blbt bleb blee blei blek blet bleu blik blir blit blkb blub blue blur blut breb bree brei brek brel brer bret brie brik bril brit brkb brrr brue brut btek btie btrt bttb bubb bube bubi bubu buel buer bueu buie buik buir buit buiu buke buki bukk buku bulb bule buli bulk bull bult bulu bur- burb bure buri burk burl burr burt buru but- bute buti butt ebbr ebel eber ebit ebli ebru ebul ebur eeee eeke eele eete eetu eiei eier eike eiki eile eire eitb eiti eitr ekeb ekek eker eket ekki ekur el-b elbe elbi elbu elee elek eler elet elie elik elil elit elke elki elle elli ellu elte elue elui elul erbb erbe ereb erei erel erer eret erie erik eril erit eriu erke erki erle erli erll erre ertl ertu erub erur etbr etee etel eter etik etre ette etti ettu etui eubi euer eule eur- eure eurt i-be ibet ibie ible ibri ibtb ibtl ieet ieie iele iere ieri iett iiie iiii iiit iitr iitt ikee iker ikki ikri ikue ile- ilek iler ilet ilie ilir ilit ilke ilki ilku ill- ille illi illt ilre ilut irbe iree irel irer iri- irie iril irki irlb irre irri irte irti irul itbe itek itel iter itet itie itil itll itri itur iuel iuiu kbbb kbbe kbbi kbbk kbbl kbbr kbbt kbbu kbeb kbee kbek kbel kber kbet kbib kbie kbik kbil kbit kbiu kbkb kbkk kbkl kbkr kblb kble kbll kblr kblt kblu kbrb kbre kbri kbrk kbrl kbrt kbru kbtb kbte kbtk kbtl kbtr kbtt kbub kbue kbuk kbul kbur kbut kbuu kebb kebe kebi kebr kebt kebu keek keel keer keet keib keii keik keil keir kekb keke keki kekl keku kele keli kelk kell kelt kelu ker- kerb kere keri kerk kerl kerr kert keru ket- kete keti ketk ketr kett ketu keul keur kibb kibe kibi kibl kibr kibt kibu kiel kier kieu kiii kiik kiit kiiu kiki kikk kikr kikt kiku kilb kile kili kilk kill kilr kilt kirb kiri kirk kirr kirt kiru kite kiti kitl kitr kitt kitu kiul kiur kiuu kkbb kkbe kkbi kkbl kkbr kkbt kkik kkit kkkk kklb kkli kkll kkrb kkre kkrk kkrl kkrr kkrt kktk kktl kktu kkut kkuu klbb klbe klbl klbt klbu kleb klee klek kler klet klib klik klil klir klit kliu klkk klkl klkr kllb klle kllk klrk klrr klru klti kltk kltr kltt klub klue kluk klur kluu krbb krbe krbi krbk krbl krbr krbt kreb kree krei krek kret kreu krib krik kril krit krke krki krkk krkr krku krle krlt krrb krre krri krrk krrl krrr krrt krti krtk krtr krue krui kruk krul krur ktbb ktbl ktbr