cccc cccf cccu ccee ccfc ccff ccoc ccrc ccre ccrf ccrt cctc cctt ccuc ccut cec- cece ceco cect ceec cef- cefc ceor ceou cer- cerc cere cerf cero cert cet- cete ceto cfcf cfco cffr cfor cfre cfrt cftc cfte cftr coce coco coct cocu cofc cofe coff coft coof coot cor- corc core corf coro corr cort cotc cote coto cott cotu coue cour cout crcc crce crcr cre- crec cree creo cret creu crfc croc croe croo cror crot crrt crtc crtf crue crut ctcf ctec ctfc ctfo ctor ctot ctrc cucc cuce cuer cufc cuff cufo cure curf curo curr curt cut- cutc cute cuto cutt eccc ecce ecco ecct ecef ecfc ecfr eco- ecot ecou ecrc ecrf ecrr ecru ect- ectc ectf ecto eeee eefe eeoc eerc eero eetc eete eetu efco efeo efet efor eft- eftu eore eotc eoto ercc erce erec erer eret erfc erft eroc eroe eroo errc erre erro ertu eruc erur etcc etco etec etee eter etfc etfe etoe etre etro ette etto ettu euer eufc eur- eurc eure euro eurt fccf fcot fcto fece fect feer feet fefc fefe feff fefo feof ferc fere fero ferr fert feru fete fetr fett fetu ffcc ffee ffff ffrr fftf foce foco foer fofo foof foot for- fore foro forr fort fote foto fott four fout frcc free freo fret frfc froe frot frou frue ft-c fter ftfc ftuc fuc- fuct fuet fufc fuff fufu fuor fur- fure furo furr furt fute futo futu o-eo occc occt oce ocee ocef ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oeuf ofcr ofer off- offc offe offo offr offu ofor ofre oocr ooer ooff oooo oore oort orce orco ore- orec oreo orer orfe orff orfu oro- oroe orof oror orot orro ortc orte orto otee oter otfc oto- otoe otof otoo otor otre otro otte otto ottu otur oucc ouer oufc oufe ouff our- oure ouro ourt out- oute outo ouu- rccc rcet rcfc rctc recc rece recr rect recu reef reet refe reff refr reft refu reof reot reou rere rero rert reru rete reto retr rett reue reuf reut reuu rfef rffc rftc rocc roce roco roer roet rofc rofe roff rofo roof roor root rorc rore roro rort roru rotc rote roto rotr rott roue rouf rout rrfc rrrr rtcc rtce rtee rtfc ruce ruct ruer ruet rufc rufe ruff rufo ruft rurc rure ruro ruru rute ruto rutt rutu tccc tccu tcfc tctc teco tecr tect teec teef teer teet tefc teff teft teor ter- terc tere terf tero terr teru tete teto tetr tett tetu teut tfcu tfec tfot tftc toce toco toee toer toet toff tofo toft tofu toof toor toot torc tore torf toro torr tort toru totc tote toto totr tott tour tout trcc tre- trec tree tref treo tret treu trfc trfr troc troe troo trot trou trtc trte trtr truc true trut truu tteo tter ttfc ttff ttoe tttt tucc tuco tuer tuet tufc tufe tuff tufo tuft tufu tuor turc ture turf turo turr turt turu tute tuto tutt tutu tuuo ucrc ucut ufcu ufer uffe uocc uofo uor- uore ure- uret urfe urff urft uro- uroo urre urte urur urut utec uter utfo utor utto uttu uuoc uutf uuuu