-hou bbbb bbch bbci bbrc bcbc bccc bcci bcor bcru bcuc bhcc bhir bhoi bhor bhur bhuu bibb bibi bibo bicc bich bici bico bihi bihu bio- bioc bioi biou birb biri biro birr biru bobb bobi bobo bobu boch boco bocu boho bohr bohu boi- boii boiu boob booc booh boor bor- borh bori boro borr boru bouh bour brcb bric brih brio brob broc broh broo bror brou brrr bruc bruh bubb bubi bubo bubu bucc buch buci buco bucu buhi buho buhr buic buir buiu bur- burb burh buri buro burr buru c-bo cbbc cbcc cbcr cbcu cbir cbrh ccbc cccb cccc ccci cccu cchr ccic ccii ccir ccob ccoc ccrc ccri ccuc chch chci chib chic chih chir chiu choc choh choi choo chor chou chrb chrc chro chrr chub chui chur cibc cibi cibo cicc cich cici cico cicr cicu cihr ciii ciob cior cirb circ cirh ciri ciro cirr ciuc cobb cobh cobi cobo cobu coch coco cocu coho coir coob cooh cor- corb corc cori coro corr coub cour crbc crbu crcc crcr crib cric criu crob croc croh croo cror crub cub- cubb cubi cucc cuci cui- cuir curb curi curo curr h-ii hbic hbio hboc hcbc hccb hccc hcch hchi hhhh hi-c hibi hibu hicc hich hico hihc hihi hiho hiiu hiob hioc hiri hiro hiru hobo hoch hocr hoho hoir hoor horc hori horo horr hour hrib hrob hrrc hubb hubi hubo huch hucu huhi huhu huib huir huor huri huro hurr huru huub ibrc ibri ibro icbc iccb iccc icci icco iccr iccu ichc ichi icho ichr ichu icoc icor icrc icrr icru icub ihcc ihob ihrc ihub ihuo iiii iiio iioi iioo iirc iiuc iobi ioci ioii ioio iooi iooo iori ircc ircu iri- iric irio irob iroc iroh irrc irri iucc iuiu obbo oboi obor obrh obri obro obuh ocbc occc occi ochi ocro ocrr ocur ohcc ohhi ohho ohio ohob ohoh oici oiii oobi oocr ooho oooh oooo orbb orbi orbo orbu orch orci orco ori- oric orio oro- oror orri orro orub oucc ouch ouii ouir our- ouro ouu- rbbb rbbr rboh rcbc rcbo rccb rccc rchb rcic rhib rhio rhob rhoc rhoh rib- ribo ribu ricc rich rico riho riou riri rob- robb robi robo robu rocc roch roco rohr rohu roio roir roiu roob rooi roor rorc rori roro roru roub rouh rrrr rubb rubi rubu ruch ruci ruhh ruhi ruhr rurc ruri ruro ruru ubbi ubbo ubic ubii ubir uboc ucbc ucci uchi ucho ucio ucrc uhoh uhuh uirr uocc uor- urbi urch urci urho urib uric uriu uro- uroo urrh urri urur uuoc uuri uuuu