cccc cccf cccu ccfc ccff ccoc ccrc ccrf ccrt cctc cctt ccuc ccut cfcf cfco cffr cfor cfrt cftc cftk cftr ckck ckco ckfr ckoc ckoo ckor ckot ckrc cock coco coct cocu cofc coff coft cok- coko coof cook coot cor- corc corf cork coro corr cort cotc coto cott cotu couk cour cout crcc crcr crfc crkc croc crok croo cror crot crrt crtc crtf cruk crut ctcf ctfc ctfo ctor ctot ctrc cucc cuck cufc cuff cufo cuk- curf curo curr curt cut- cutc cuto cutt f--k fccf fcot fcto fcuk ffcc ffff ffrr fftf fock foco fofo foof fook foot for- fork foro forr fort foto fott four fout frcc frfc frot frou ft-c ftfc ftuc fuc- fuck fuct fufc fuff fufu fukk fuko fuku fuor fur- furo furr furt futo futu kccc kcck kccr kcct kccu kcfc kcfo kcft kckc kckf kckk kcko kckr kcof kcor kcot kcou kcrc kcro kcrr kcrt kcru kctc kcto kctu kcuf kcuk kfcf kfco kfcr kfff kffk kfok kfoo kfor kfrc kfro kfrr kfru kftc kftk kftt kftu kfuo kfut kkck kkco kkcr kkct kkfr kkft kkkk kkoo kkor kkot kkrc kkrf kkrk kkro kkrr kkrt kktc kktk kktu kkut kkuu kocf kock koct kofc koff kofk kofo koft kofu kokc kokf kokk koko kokr koku kooc kook kooo koor koot koou korc korf kork koro korr kort koru kotc kotk koto kotr kott kotu kour kout kouu krcc krco krcu krfc krff krfo krft krkc krkk krko krkr krku kroc krof krok kroo kror krrc krrf krrk krro krrr krrt krtc krtk krto krtr kruc kruf kruk krur ktcc ktck ktco ktcr ktfc ktfo ktkc ktkk ktko ktkr ktkt ktku ktoc ktok ktoo ktor ktot ktrc ktrf ktrk ktro ktrr ktrt ktru kttc kttf kttk ktto kttr kttt kttu ktuc ktuf kucc kuco kucr kufc kuff kufo kufr kukk kuku kuok kuoo kurk kuro kurr kurt kuru kutf kuto kutr kutt kutu kuuk kuur kuuu occc occt ocro ocrr oct- octo ocur ofcr off- offc offo offr offu ofor okcu okko okok okor okot okro okto okur oocr ooff ooku oooo oort orco orff orfu orko oro- orof orok oror orot orro ortc orto otfc oto- otof otok otoo otor otro otto ottu otur oucc oufc ouff our- ouro ourt out- outo ouu- rccc rcfc rctc rffc rftc rkkf rocc rock roco rofc roff rofo rokk roko rokr roku roof rook roor root rorc rork roro rort roru rotc rotk roto rotr rott rouf rouk rout rrfc rrrr rtcc rtfc ruck ruct rufc ruff rufo ruft rukk ruku ruok rurc ruro ruru ruto rutt rutu tccc tccu tcfc tctc tfcu tfot tftc tkof tock toco toff tofo toft tofu toko toku toof took toor toot torc torf tork toro torr tort toru totc toto totr tott touk tour tout trcc trfc trfr troc troo trot trou trtc trtr truc truk trut truu ttfc ttff tttt tucc tuck tuco tufc tuff tufo tuft tufu tuko tuor turc turf turk turo turr turt turu tuto tutt tutu tuuo ucrc ucut ufcu ufuk ukcc ukko ukok ukrc ukur uocc uofo uor- urff urft uro- urok uroo uruk urur urut utfo utor utto uttu uuoc uutf uuuu