-hou bbbb bbch bbci bbeb bbrc bcbc bccc bcci bcec bcer bche bcie bcor bcru bcuc bebb bebe bebi bebo bech beci becu beeb beer behr beic beir beo- beor berc bere beri bero berr beru beur bhcc bher bhie bhir bhoi bhor bhur bhuu bibb bibe bibi bibo bicc bice bich bici bico bieb bier bieu bihe bihi bihu bio- bioc bioi biou birb bire biri biro birr biru bobb bobe bobi bobo bobu boce boch boco bocu boec boee boeo boer boho bohr bohu boi- boie boii boiu boob booc booe booh boor bor- bore borh bori boro borr boru boue bouh bour brcb brce breb brec bree brei breo brer bric brie brih brio brob broc broe broh broo bror brou brrr bruc brue bruh bubb bube bubi bubo bubu bucc buce buch buci buco bucu buer bueu buhe buhi buho buhr buic buie buir buiu bur- burb bure burh buri buro burr buru c-bo cbbc cbcc cbce cbcr cbcu cbec cbee cber cbir cbre cbrh ccbc cccb cccc ccci cccu ccee cche cchr ccic ccii ccir ccob ccoc ccrc ccre ccri ccuc cebu cec- cece ceci ceco ceeb ceec ceor ceou cer- cerc cere ceri cero ceui chce chch chci cheb chec chee cheh cher cheu chib chic chie chih chir chiu choc choh choi choo chor chou chrb chrc chro chrr chub chui chur cibc cibe cibi cibo cicc cich cici cico cicr cicu ciee cier cihr ciii ciob cior cirb circ cire cirh ciri ciro cirr ciuc cobb cobe cobh cobi cobo cobu coce coch coco cocu coho coir coob cooh cor- corb corc core cori coro corr coub coue cour crbc crbu crcc crce crcr cre- creb crec cree creh crei creo creu crib cric crie criu crob croc croe croh croo cror crub crue cub- cubb cube cubi cucc cuce cuci cuer cui- cuir curb cure curi curo curr ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ebru ebur ecbc ecbe eccb eccc ecce ecci ecco eche echo ecib eco- ecou ecrc ecri ecrr ecru eeee eeoc eerc eero ehcc eheh eher eheu ehre eich eico eiec eiei eier eiho eiou eire eoir eore eori erbb erbe ercc erce erch ereb erec erei erer erhc erhu eric erie erih erio eriu erob eroc eroe eroi eroo errc erre erro erub eruc eruh erur eubc eubi euch euer euoi eur- eurc eure euro h-ii hbic hbio hboc hcbc hccb hccc hcch hchi hebb hebe hebi hebo hebr hech heeb heer hehe heho heic heie heih heir heor heou herb herc here heri hero herr heru heue heui heur hhhh hi-c hibi hibu hicc hice hich hico hiei hier hieu hihc hihe hihi hiho hiie hiiu hiob hioc hire hiri hiro hiru hobe hobo hoce hoch hocr hoei hoer hohe hoho hoie hoir hooe hoor horc hore hori horo horr houe hour hree hrib hrob hrrc hubb hube hubi hubo huch hucu huer huhi huhu huib huie huir huor hure huri huro hurr huru huub i-be ibec ibeh ibie ibrc ibri ibro icbc iccb iccc icci icco iccr iccu icec icee icer ichc iche ichi icho ichr ichu icoc icor icrc icre icrr icru icub icue iecc ieie ieio ieoh iere ieri ihcc iher ihob ihrc ihre ihub ihuo iiie iiii iiio iioi iioo iirc iiuc iobi ioci ioee ioii ioio iooi iooo iore iori irbe ircc ircu iree irer iri- iric irie irio irob iroc iroh irrc irre irri iucc iuce iuiu o-eo obbo obec ober obie oboe oboi obor obre obrh obri obro obuh ocbc occc occi oce ocee oche ochi ocre ocro ocrr ocur oec- oecc oeec oere ohbe ohcc ohee oher ohhi ohho ohio ohob ohoh ohre oici oier oiii oire oobe oobi oocr ooer ooho oooh oooo oore orbb orbe orbi orbo orbu orce orch orci orco ore- oreb orec oreh oreo orer orhe ori- oric orie orio oro- oroe oror orri orro orub oucc ouch ouer ouie ouii ouir our- oure ouro ouu- rbbb rbbr rboh rcbc rcbo rccb rccc rchb rcic rebb rebe rebo rebu recc rece rech reci recr recu reeb rehb rehe rehi reii reir reiu reou rere reri rero reru reue reuu rhce rheb rhee rheo rhib rhio rhob rhoc rhoh rhue rib- ribe ribo ribu ricc rice rich rico rier rieu riho riou rire riri riue rob- robb robe robi robo robu rocc roce roch roco roer rohe rohr rohu roio roir roiu roob rooi roor rorc rore rori roro roru roub roue rouh rrrr rubb rube rubi rubu ruce ruch ruci ruer ruhe ruhh ruhi ruhr rurc rure ruri ruro ruru u-ie ubbe ubbi ubbo uber ubic ubii ubir uboc ucbc ucci uche uchi ucho ucio ucrc ueir uher uhoh uhuh uirr uocc uor- uore urbe urbi urch urci ure- ureh urho urib uric urie uriu uro- uroo urre urrh urri urur uuoc uuri uuuu