bbbb bbeb bbet bbrc bbrg bcbc bcbg bccc bcec bcer bcet bcor bcru bctc bcuc bebb bebe bebo becu beeb beeg beer beet begg bego begu beo- beor beot berc bere berg bero berr bert beru betc bete beto bett betu beur bobb bobe bobo bobu boce boco bocu boec boee boeo boer boet boge bogg bogo bogt boob booc booe boog boor boot bor- bore borg boro borr bort boru botb bote boto bott boue bour bout brcb brce breb brec bree breg breo brer bret brob broc broe brog broo bror brot brou brrr brtc bruc brue brug brut btcc btec btob btor btrc btrt bttb bubb bube bubo bubu bucc buce buco bucu buer bueu buge bugg bugo bur- burb bure burg buro burr burt buru but- bute buto butt c-bo cbbc cbcc cbce cbcr cbct cbcu cbec cbee cber cbet cbgb cbot cbre cbrt cbtc ccbc cccb cccc cccu ccee ccgc ccgt ccob ccoc ccrc ccre ccrg ccrt cctb cctc cctt ccuc ccut cebu cec- cece ceco cect ceeb ceec cege cego ceor ceou cer- cerc cere cero cert cet- cete ceto cgcc cgcg cger cgro cgtu cobb cobe cobo cobu coce coco coct cocu cogo coob coot cor- corb corc core corg coro corr cort cotb cotc cote coto cott cotu coub coue cour cout crbc crbu crcc crce crcr cre- creb crec cree creg creo cret creu crob croc croe croo cror crot crrt crtc crub crue crug crut ctec ctge ctgu ctor ctot ctrc cub- cubb cube cucc cuce cuer curb cure curo curr curt cut- cutc cute cuto cutt ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ebru ebur ecbc ecbe eccb eccc ecce ecco ecct eco- ecog ecot ecou ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eerg eero eetc eete eetu egbe egbu egcc egcg egcr egec egee eger eggb egge eggo ego- egor egot egre egte eore eotc eoto erbb erbe ercc erce ereb erec erer eret erg- ergg ergo erob eroc eroe eroo errc erre erro ertu erub eruc erur etbc etbr etcc etco etec etee eter etoe etre etro ette etto ettu eubc euer euge eur- eurc eure euro eurt gbbo gc-c gcbc gccc gcet gcrg gctc gebe gece geer geet gege gegg gego geo- geog gerb gere gero gert geru getb gete getg geto gett geue ggbt gggg gobe gobo goce gocr goer gogo goog goor goot gorb gore gorg goro gorr gort gote goto gott gou- goug gour gout grbr grcc grce greb grec gree greg gret greu grob groc grog groo gror grot grou grrr grtc grub grue grug grur grut gtbr gtco gtcr gtoe gubb gubu guer gugb guge gugg gugu gurb gure gurg guro gurr gurt guru gute guto gutt gutu o-eo obbo obec ober obet oboe obor obot obre obro ocbc occc occt oce ocee ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oegb oere ogb ogbe ogee oger ogge ogog ogou ogre ogro oobe oocr ooer oooo oore oort ootb orbb orbe orbo orbu orce orco ore- oreb orec oreg oreo orer orge orgo oro- oroe oror orot orro ortc orte orto orub otee oter oto- otoe otog otoo otor otre otro otte otto ottu otur oucc ouer ouge our- oure ouro ourt out- outb oute outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcet rcgc rcrg rctc rctg rebb rebe rebo rebu recc rece recr rect recu reeb reet rege rego regr regt regu reog reot reou rere rerg rero rert reru rete reto retr rett reue reut reuu rgbe rgtr rob- robb robe robo robt robu rocc roce roco roeg roer roet roge rogg rogo roob roog roor root rorc rore roro rort roru rotc rote rotg roto rotr rott roub roue rout rrrr rtcc rtce rtcg rtee rubb rube rubu ruce ruct ruer ruet ruge rugg rurc rure ruro ruru rute ruto rutt rutu tbcb tbcc tbce tbrb tccc tccu tctc tebo tebu teco tecr tect teec teer teet tegg tego tegt tegu teor ter- terc tere tero terr teru tete teto tetr tett tetu teut tgcc tgtc tobe tobo tobt tobu toce toco toee toer toet toge togo togr togt toor toot torc tore torg toro torr tort toru totc tote toto totr tott toug tour tout trcc tre- trec tree treg treo tret treu trge troc troe trog troo trot trou trtc trte trtr trub truc true trug trut truu ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuco tuer tuet tugg tugu tuor turb turc ture turg turo turr turt turu tute tuto tutt tutu tuuo ubbe ubbo uber ubet uboc ucbc ucrc ucut ugcc ugcg ugeo uggo uggt ugro ugur uguu uocc uor- uore urbe ure- uret urge urgu uro- uroo urre urte urur urut utec uter utor utto uttu utug uuoc uuuu