bbbb bbci bbeb bbet bbrc bcbc bccc bcci bcec bcer bcet bcie bcit bcor bcru bctc bcuc bebb bebe bebi bebo beci becu beeb beer beet beic beir beit beo- beor beot berc bere beri bero berr bert beru betc bete beti beto bett betu beur bibb bibe bibi bibo bicc bice bici bico bieb bier biet bieu bio- bioc bioi biot biou birb bire biri biro birr birt biru bitc bite bito bitt bitu bobb bobe bobi bobo bobu boce boco bocu boec boee boeo boer boet boi- boie boii boit boiu boob booc booe boor boot bor- bore bori boro borr bort boru botb bote boti boto bott boue bour bout brcb brce breb brec bree brei breo brer bret bric brie brio brit brob broc broe broo bror brot brou brrr brtc bruc brue brut btcc btec btie btob btor btrc btrt bttb bubb bube bubi bubo bubu bucc buce buci buco bucu buer bueu buic buie buir buit buiu bur- burb bure buri buro burr burt buru but- bute buti buto butt c-bo cbbc cbcc cbce cbcr cbct cbcu cbec cbee cber cbet cbir cbit cbot cbre cbrt cbtc ccbc cccb cccc ccci cccu ccee ccic ccii ccir ccob ccoc ccrc ccre ccri ccrt cctb cctc cctt ccuc ccut cebu cec- cece ceci ceco cect ceeb ceec ceor ceou cer- cerc cere ceri cero cert cet- cete ceti ceto ceui cibc cibe cibi cibo cicc cici cico cicr cict cicu ciee cier ciii ciit ciob cior cirb circ cire ciri ciro cirr cirt citb cite citi cito citt citu ciuc cobb cobe cobi cobo cobu coce coco coct cocu coir coit coob coot cor- corb corc core cori coro corr cort cotb cotc cote coti coto cott cotu coub coue cour cout crbc crbu crcc crce crcr cre- creb crec cree crei creo cret creu crib cric crie crit criu crob croc croe croo cror crot crrt crtc crub crue crut ctbi ctec ctic ctor ctot ctrc cub- cubb cube cubi cucc cuce cuci cuer cui- cuir cuit curb cure curi curo curr curt cut- cutc cute cuto cutt ebbc ebbo ebbr ebcc eber ebic ebit eboe eboo ebor ebro ebru ebur ecbc ecbe eccb eccc ecce ecci ecco ecct ecib ecit eco- ecot ecou ecrc ecri ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eico eiec eiei eier eiou eire eitb eitc eiti eito eitr eoir eore eori eotc eoto erbb erbe ercc erce ereb erec erei erer eret eric erie erio erit eriu erob eroc eroe eroi eroo errc erre erro ertu erub eruc erur etbc etbr etcc etco etec etee eter etic etio etoe etre etro ette etti etto ettu etui eubc eubi euer euoi eur- eurc eure euro eurt i-be ibec ibet ibie ibot ibrc ibri ibro ibtb ibtc icbc iccb iccc icci icco iccr icct iccu icec icee icer icet icoc icor icrc icre icrr icrt icru icub icue iecc ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iirc iitr iitt iiuc iobi ioci ioee ioii ioio ioit iooi iooo iore iori iote ioto irbe ircc ircu iree irer iri- iric irie irio irob iroc irrc irre irri irte irti itbe itec iter itet itic itie itoi itoo itor itou itri itto itur iucc iuce iuiu o-eo obbo obec ober obet obie obit oboe oboi obor obot obre obri obro ocbc occc occi occt oce ocee ocet ocre ocro ocrr oct- octe octi octo ocur oec- oecc oeec oere oeti oici oier oiii oire oirt oitc oiti oobe oobi oocr ooer oooo oore oort ootb orbb orbe orbi orbo orbu orce orci orco ore- oreb orec oreo orer ori- oric orie orio orit oro- oroe oror orot orri orro ortc orte orto orub otee oter otic otit oto- otoe otoo otor otre otro otte otti otto ottu otur oucc ouer ouie ouii ouir ouit our- oure ouro ourt out- outb oute outi outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcet rcic rctc rcti rebb rebe rebo rebu recc rece reci recr rect recu reeb reet reii reir reit reiu reot reou rere reri rero rert reru rete reti reto retr rett reue reut reuu rib- ribe ribo ribu ricc rice rico rict rier riet rieu riot riou rire riri rite riti rito ritt ritu riue rob- robb robe robi robo robt robu rocc roce roco roer roet roio roir roit roiu roob rooi roor root rorc rore rori roro rort roru rotc rote roti roto rotr rott roub roue rout rrrr rtcc rtce rtee rtei rubb rube rubi rubu ruce ruci ruct ruer ruet ruit rurc rure ruri ruro ruru rute ruti ruto rutt rutu tbcb tbcc tbce tbit tbrb tccc tccu tctc tebo tebu teco tecr tect teec teer teet teic teie teir teiu teor ter- terc tere teri tero terr teru tete teti teto tetr tett tetu teut tibi tibu ticc tice tico tie- tiee tiei tieo tier tiet tiit tiiu tiou tirb tire tiri tiro tirr tiru titc tite titi tito titt titu tobe tobi tobo tobt tobu toce toci toco toee toei toer toet toie toit toor toot torc tore tori toro torr tort toru totc tote toti toto totr tott toui tour tout trcc tre- trec tree trei treo tret treu tri- trib tric trie trio trit troc troe troi troo trot trou trtc trte trtr trub truc true trut truu ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuco tuei tuer tuet tuit tuiu tuor turb turc ture turi turo turr turt turu tute tuti tuto tutt tutu tuuo u-ie ubbe ubbi ubbo uber ubet ubic ubii ubir ubit uboc ucbc ucci ucio ucrc ucut ueir uirr uocc uor- uore urbe urbi urci ure- uret urib uric urie uriu uro- uroo urre urri urte urur urut utec uter utor utri utti utto uttu uuoc uuri uuuu