cccc cccf ccci ccfc ccff ccfi ccic ccii ccir ccoc ccrc ccrf ccri ccrt cctc cctt cfcf cfco cffr cfit cfor cfrt cftc cftr cicc cici cico cicr cict ciff ciii ciit cior circ ciri ciro cirr cirt citf citi cito citt coco coct cofc coff cofi coft coif coir coit coof coot cor- corc corf cori coro corr cort cotc coti coto cott crcc crcr crfc cric crif crit croc croo cror crot crrt crtc crtf ctcf ctfc ctfo ctic ctor ctot ctrc 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 frcc frfc fric frio frit frot ft-c ftfc ftii iccc iccf icci icco iccr icct icoc icor icrc icrf icrr icrt ifco ific ifit ifor ifrf ifri ifto iiii iiio iiit iioi iioo iirc iitr iitt ioci iofc ioii ioio ioit ioof iooi iooo iori iotf ioto ircc iri- iric irio iroc irrc irri irtf irti itic itif itof itoi itoo itor itrf itri ittf itto occc occi occt ocro ocrr oct- octi octo ofcr off- offc offo offr ofit ofor oici oiii oirt oitc oiti oocr ooff oooo oort orci orco orff orfi ori- oric orif orio orit oro- orof oror orot orri orro ortc orto otfc otic otif otit oto- otof otoo otor otro otti otto rccc rcfc rcic rctc rcti rffc rfic rftc ricc rico rict riff rift riif riot riri riti rito ritt rocc roco rofc roff rofo roif roio roir roit roof rooi roor root rorc rori roro rort rotc roti roto rotr rott rrfc rrif rrrr rtcc rtfc tccc tcfc tctc tfot tftc ticc tico tiff tifo tift tiit tiri tiro tirr titc titi tito titt toci toco toff tofi tofo toft toit toof toor toot torc torf tori toro torr tort totc toti toto totr tott trcc trfc trfr tri- tric trif trio trit troc troi troo trot trtc trtr ttfc ttff tttt