cccc ccci cccu ccic ccii ccir ccoc ccrc ccri ccrt cctc cctt ccuc ccut cicc cici cico cicr cict cicu ciii ciit cior circ ciri ciro cirr cirt citi cito citt citu ciuc coco coct cocu coir coit coot cor- corc cori coro corr cort cotc coti coto cott cotu cour cout crcc crcr cric crit criu croc croo cror crot crrt crtc crut ctic ctor ctot ctrc cucc cuci cui- cuir cuit curi curo curr curt cut- cutc cuto cutt iccc icci icco iccr icct iccu icoc icor icrc icrr icrt icru iiii iiio iiit iioi iioo iirc iitr iitt iiuc ioci ioii ioio ioit iooi iooo iori ioto ircc ircu iri- iric irio iroc irrc irri irti itic itoi itoo itor itou itri itto itur iucc iuiu occc occi occt ocro ocrr oct- octi octo ocur oici oiii oirt oitc oiti oocr oooo oort orci orco ori- oric orio orit oro- oror orot orri orro ortc orto otic otit oto- otoo otor otro otti otto ottu otur oucc ouii ouir ouit our- ouro ourt out- outi outo ouu- rccc rcic rctc rcti ricc rico rict riot riou riri riti rito ritt ritu rocc roco roio roir roit roiu rooi roor root rorc rori roro rort roru rotc roti roto rotr rott rout rrrr rtcc ruci ruct ruit rurc ruri ruro ruru ruti ruto rutt rutu tccc tccu tctc ticc tico tiit tiiu tiou tiri tiro tirr tiru titc titi tito titt titu toci toco toit toor toot torc tori toro torr tort toru totc toti toto totr tott toui tour tout trcc tri- tric trio trit troc troi troo trot trou trtc trtr truc trut truu tttt tucc tuco tuit tuiu tuor turc turi turo turr turt turu tuti tuto tutt tutu tuuo ucci ucio ucrc ucut uirr uocc uor- urci uric uriu uro- uroo urri urur urut utor utri utti utto uttu uuoc uuri uuuu