bbbb bbeb bbet bebb bebe bebi bebo beeb beej beer beet beij beir beit beo- beor beot bere beri bero berr bert beru bete beti beto bett betu beur bibb bibe bibi bibo bieb bier biet bieu biji biju bio- bioi biot biou birb bire biri biro birr birt biru bite bito bitt bitu bobb bobe bobi bobo bobu boee boeo boer boet boi- boie boii boit boiu boji bojo bojt boju boob booe boor boot bor- bore bori borj boro borr bort boru botb bote boti boto bott boue bour bout breb bree brei breo brer bret brie brio brit brje brob broe broo bror brot brou brrr brue brut btie btob btor btrt bttb bubb bube bubi bubo bubu buer bueu buie buir buit buiu buje buji bujo buju bur- burb bure buri burj buro burr burt buru but- bute buti buto butt ebbo ebbr eber ebit eboe eboo ebor ebro ebru ebur eeee eero eete eetu eiei eier eiji eiou eire eitb eiti eito eitr ejer ejit ejji ejob ejoo ejot eoir eore eori eoto erbb erbe ereb erei erer eret erie erio erit eriu erob eroe eroi eroo erre erro ertu erub erur etbr etee eter etio etoe etre etro ette etti etto ettu etui eubi euer euoi eur- eure euro eurt i-be ibet ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt ijet ijji ijui iobi ioee ioii ioio ioit iooi iooo iore iori iote ioto irbe iree irer iri- irie irio irje irob irre irri irte irti itbe iter itet itie itoi itoo itor itou itri itto itur iuiu j-ro jbob jebb jebe jeer jeet jeit jeju jere jeri jero jert jeru jetb jete jeti jett jeur jibb jibe jibi jiet jije jiji jiju jiri jiro jirt jiru jiti jito jitu jobe jobo jobu joee joie joio joit joji jojo joor joot jore joro jort joto jott jour jrbr jube jubu juei juju jure juri jurr jute juti o-eo obbo ober obet obie obit oboe oboi obor obot obre obri obro oere oeti oier oiii oire oirt oiti ojeu oobe oobi ooer ooij ooji oooo oore oort ootb orbb orbe orbi orbo orbu ore- oreb oreo orer ori- orie orio orit orji oro- oroe oror orot orri orro orte orto orub oruj otee oter otit oto- otoe otoo otor otre otro otte otti otto ottu otur ouer ouie ouii ouir ouit ouju our- oure ouro ourt out- outb oute outi outo ouu- rbbb rbbr rebb rebe rebo rebu 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 rier riet rieu riji rijo riot riou rire riri rite riti rito ritt ritu riue rob- robb robe robi robo robt robu roer roet roio roir roit roiu roje roji rojo roob rooi roor root rore rori roro rort roru rote roti rotj roto rotr rott roub roue rout rrrr rtee rtei rubb rube rubi rubu ruer ruet ruit rure ruri ruro ruru rute ruti ruto rutt rutu tbit tbrb tebo tebu teej teer teet teie teir teiu tejo teju teor ter- tere teri terj tero terr teru tete teti teto tetr tett tetu teut tibi tibu tie- tiee tiei tieo tier tiet tiit tiiu tiji tijo tiou tirb tire tiri tiro tirr tiru tite titi tito titt titu tobe tobi tobo tobt tobu toee toei toer toet toie toit toji tojo toor toot tore tori toro torr tort toru tote toti toto totr tott toui tour tout tre- tree trei treo tret treu tri- trib trie trio trit troe troi troo trot trou trte trtr trub true trut truu ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tuei tuer tuet tuit tuiu tuor turb ture turi turo turr turt turu tute tuti tuto tutt tutu tuuo u-ie ubbe ubbi ubbo uber ubet ubii ubir ubit ueir uirr uor- uore urbe urbi ure- uret urib urie uriu uro- uroo urre urri urte urur urut uter utor utri utti utto uttu uuri uuuu