cccc cccf ccci cccu ccfc ccff ccfi ccic ccii ccir ccoc ccrc ccrf ccri ccrt cctc cctt ccuc ccut cfcf cfco cffr cfit cfor cfrt cftc cftr cicc cici cico cicr cict cicu ciff ciii ciit cior circ ciri ciro cirr cirt citf citi cito citt citu ciuc coco coct cocu cofc coff cofi coft coif coir coit coof coot cor- corc corf cori coro corr cort cotc coti coto cott cotu cour cout crcc crcr crfc cric crif crit criu croc croo cror crot crrt crtc crtf crut ctcf ctfc ctfo ctic ctor ctot ctrc cucc cuci cufc cuff cufi cufo cui- cuif cuir cuit curf curi curo curr curt cut- cutc cuto cutt fccf fcic fcii fcot fcto ffcc ffff ffii ffrr fftf ficc fico fict fifc fiff fifi fifo fift fiii fior fitc fiti fitt foci foco fofo foof foot for- fori foro forr fort foti foto fott four fout frcc frfc fric frio frit frot frou ft-c ftfc ftii ftuc fuc- fuci fuct fufc fuff fufu fuir fuit fuor fur- furi furo furr furt futi futo futu iccc iccf icci icco iccr icct iccu icoc icor icrc icrf icrr icrt icru ifco ific ifit ifor ifrf ifri ifto iiii iiio iiit iioi iioo iirc iitr iitt iiuc ioci iofc ioii ioio ioit ioof iooi iooo iori iotf ioto ircc ircu irfu iri- iric irio iroc irrc irri irtf irti itic itif itof itoi itoo itor itou itrf itri ittf itto itur iucc iuiu occc occi occt ocro ocrr oct- octi octo ocur ofcr off- offc offo offr offu ofit ofor oici oiii oirt oitc oiti oocr ooff oooo oort orci orco orff orfi orfu ori- oric orif orio orit oro- orof oror orot orri orro ortc orto otfc otic otif otit oto- otof otoo otor otro otti otto ottu otur oucc oufc ouff ouii ouir ouit our- ouro ourt out- outi outo ouu- rccc rcfc rcic rctc rcti rffc rfic rftc ricc rico rict riff rift rifu riif riot riou riri riti rito ritt ritu rocc roco rofc roff rofo roif roio roir roit roiu roof rooi roor root rorc rori roro rort roru rotc roti roto rotr rott rouf rout rrfc rrif rrrr rtcc rtfc ruci ruct rufc ruff rufo ruft ruif ruit rurc ruri ruro ruru ruti ruto rutt rutu tccc tccu tcfc tctc tfcu tfot tftc ticc tico tiff tifo tift tiit tiiu tiou tiri tiro tirr tiru titc titi tito titt titu toci toco toff tofi tofo toft tofu toit toof toor toot torc torf tori toro torr tort toru totc toti toto totr tott toui tour tout trcc trfc trfr tri- tric trif trio trit troc troi troo trot trou trtc trtr truc trut truu ttfc ttff tttt tucc tuco tufc tuff tufi tufo tuft tufu tuit tuiu tuor turc turf turi turo turr turt turu tuti tuto tutt tutu tuuo ucci ucio ucrc ucut ufcu uirr uocc uofo uor- urci urff urfi urft uric urif uriu uro- uroo urri urur urut utfo utor utri utti utto uttu uuoc uuri uutf uuuu