-hou bbbb bbch bbci bbeb bbrc bcbc bccc bcci bcec bcer bche bcie bcor bcru bcuc bcvo bebb bebe bebi bebo bech beci becu beeb beer behr beic beir beo- beor berc bere beri bero berr beru beur bevo 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 bive bivi 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 bove bovi bovo brcb brce breb brec bree brei breo brer brev bric brie brih brio brob broc broe broh broo bror brou brrr bruc brue bruh bruv brvi 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 buve c-bo cbbc cbcc cbce cbcr cbcu cbec cbee cber cbir cbre cbrh cbvb cbve cbvr ccbc cccb cccc ccci cccu cccv ccee cche cchr ccic ccii ccir cciv ccob ccoc ccrc ccre ccri ccuc ccvi ccvo cebu cec- cece ceci ceco ceeb ceec ceor ceou cer- cerc cere ceri cero ceui cevo chce chch chci cheb chec chee cheh cher cheu chev chib chic chie chih chir chiu chiv choc choh choi choo chor chou chov chrb chrc chro chrr chub chui chur chvo cibc cibe cibi cibo cicc cich cici cico cicr cicu ciee cier cihr ciii ciob cior cirb circ cire cirh ciri ciro cirr ciuc civc cive civh civo cobb cobe cobh cobi cobo cobu coce coch coco cocu coho coir coob cooh cor- corb corc core cori coro corr coub coue cour cove covo 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 cuve cvcc cver cvii cvrr 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 ecrv 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 erev erhc erhu eric erie erih erio eriu erob eroc eroe eroi eroo errc erre erro erub eruc eruh erur eruv erve ervi eubc eubi euch euer euoi eur- eurc eure euro ever evie evir evoe evoo evre 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 heve hevi hhhh hi-c hi-v hibi hibu hicc hice hich hico hiei hier hieu hihc hihe hihi hiho hiie hiiu hiob hioc hire hiri hiro hiru hive hobe hobo hoce hoch hocr hoei hoer hohe hoho hoie hoir hooe hoor horc hore hori horo horr houe hour hove hovi hree hrib hrob hrrc hubb hube hubi hubo huch hucu huer huhi huhu huib huie huir huor hure huri huro hurr huru huub huve hvcc 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 ihvh 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 irov irrc irre irri iucc iuce iucv iuiu ivbv ivec iver ivic ivie ivor ivre ivue o-eo obbo obec ober obie oboe oboi obor obre obrh obri obro obuh obvi 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 orve orvr oucc ouch ouer ouie ouii ouir our- oure ouro ouu- ovee over ovi- ovie ovo- ovoo ovre rbbb rbbr rboh rcbc rcbo rccb rccc rchb rcic rcuv rcvr rebb rebe rebo rebu recc rece rech reci recr recu reeb reev rehb rehe rehi reii reir reiu reou rere reri rero reru reue reuu reve revi revo 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 rive rivo rob- robb robe robi robo robu rocc roce roch roco roer roev rohe rohr rohu roio roir roiu roob rooi roor rorc rore rori roro roru roub roue rouh rove rovi rovo rrrr rubb rube rubi rubu ruce ruch ruci ruer ruhe ruhh ruhi ruhr rurc rure ruri ruro ruru ruve ruvi ruvu rv-c rver rvvh 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 uovo urbe urbi urch urci ure- ureh urho urib uric urie uriu uro- uroo urre urrh urri urur urve uuoc uuri uuuu uv-b uv-c uver uvic uvri uvvu vbcc vcbi vcci vche vecc vech veci veer veho veie veii veir veoh veor ver- verb vere veri vero veur veve vevi vevo vhhh vibe vic- vice vich vici vico vier vieu vihi viii virb virc vire viri viro virr viru viue vive vivi vivo voce voei voer voeu voho vohu voic voie voio voir vooc voor vor- vore vori voro voru voue vouh vour vrci vreo vrhe vrio vroc vuco vuir vurb vver vvob vvvv