bbbb bbch bbci bbeb bbrc bcbc bccc bcci bcec bcer bche bcie bcor bebb bebe bebi bebo bech beci beeb beer behr beic beir beo- beor berc bere beri bero berr bhcc bher bhie bhir bhoi bhor bibb bibe bibi bibo bicc bice bich bici bico bieb bier bihe bihi bio- bioc bioi birb bire biri biro birr bobb bobe bobi bobo boce boch boco boec boee boeo boer boho bohr boi- boie boii boob booc booe booh boor bor- bore borh bori boro borr brcb brce breb brec bree brei breo brer bric brie brih brio brob broc broe broh broo bror brrr c-bo cbbc cbcc cbce cbcr cbec cbee cber cbir cbre cbrh ccbc cccb cccc ccci ccee cche cchr ccic ccii ccir ccob ccoc ccrc ccre ccri cec- cece ceci ceco ceeb ceec ceor cer- cerc cere ceri cero chce chch chci cheb chec chee cheh cher chib chic chie chih chir choc choh choi choo chor chrb chrc chro chrr cibc cibe cibi cibo cicc cich cici cico cicr ciee cier cihr ciii ciob cior cirb circ cire cirh ciri ciro cirr cobb cobe cobh cobi cobo coce coch coco coho coir coob cooh cor- corb corc core cori coro corr crbc crcc crce crcr cre- creb crec cree creh crei creo crib cric crie crob croc croe croh croo cror ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecci ecco eche echo ecib eco- ecrc ecri ecrr eeee eeoc eerc eero ehcc eheh eher ehre eich eico eiec eiei eier eiho eire eoir eore eori erbb erbe ercc erce erch ereb erec erei erer erhc eric erie erih erio erob eroc eroe eroi eroo errc erre erro 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 herb herc here heri hero herr hhhh hi-c hibi hicc hice hich hico hiei hier hihc hihe hihi hiho hiie hiob hioc hire hiri hiro hobe hobo hoce hoch hocr hoei hoer hohe hoho hoie hoir hooe hoor horc hore hori horo horr hree hrib hrob hrrc i-be ibec ibeh ibie ibrc ibri ibro icbc iccb iccc icci icco iccr icec icee icer ichc iche ichi icho ichr icoc icor icrc icre icrr iecc ieie ieio ieoh iere ieri ihcc iher ihob ihrc ihre iiie iiii iiio iioi iioo iirc iobi ioci ioee ioii ioio iooi iooo iore iori irbe ircc iree irer iri- iric irie irio irob iroc iroh irrc irre irri o-eo obbo obec ober obie oboe oboi obor obre obrh obri obro ocbc occc occi oce ocee oche ochi ocre ocro ocrr 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 orce orch orci orco ore- oreb orec oreh oreo orer orhe ori- oric orie orio oro- oroe oror orri orro rbbb rbbr rboh rcbc rcbo rccb rccc rchb rcic rebb rebe rebo recc rece rech reci recr reeb rehb rehe rehi reii reir rere reri rero rhce rheb rhee rheo rhib rhio rhob rhoc rhoh rib- ribe ribo ricc rice rich rico rier riho rire riri rob- robb robe robi robo rocc roce roch roco roer rohe rohr roio roir roob rooi roor rorc rore rori roro rrrr