cccc cccf ccfc ccff ccoc ccrc ccrf ccrt cctc cctt cfcf cfco cffr cfor cfrt cftc cftk cftr ckck ckco ckfr ckoc ckoo ckor ckot ckrc cock coco coct cofc coff coft cok- coko coof cook coot cor- corc corf cork coro corr cort cotc coto cott crcc crcr crfc crkc croc crok croo cror crot crrt crtc crtf ctcf ctfc ctfo ctor ctot ctrc f--k fccf fcot fcto ffcc ffff ffrr fftf fock foco fofo foof fook foot for- fork foro forr fort foto fott frcc frfc frot ft-c ftfc kccc kcck kccr kcct kcfc kcfo kcft kckc kckf kckk kcko kckr kcof kcor kcot kcrc kcro kcrr kcrt kctc kcto kfcf kfco kfcr kfff kffk kfok kfoo kfor kfrc kfro kfrr kftc kftk kftt kkck kkco kkcr kkct kkfr kkft kkkk kkoo kkor kkot kkrc kkrf kkrk kkro kkrr kkrt kktc kktk kocf kock koct kofc koff kofk kofo koft kokc kokf kokk koko kokr kooc kook kooo koor koot korc korf kork koro korr kort kotc kotk koto kotr kott krcc krco krfc krff krfo krft krkc krkk krko krkr kroc krof krok kroo kror krrc krrf krrk krro krrr krrt krtc krtk krto krtr ktcc ktck ktco ktcr ktfc ktfo ktkc ktkk ktko ktkr ktkt ktoc ktok ktoo ktor ktot ktrc ktrf ktrk ktro ktrr ktrt kttc kttf kttk ktto kttr kttt occc occt ocro ocrr oct- octo ofcr off- offc offo offr ofor okko okok okor okot okro okto oocr ooff oooo oort orco orff orko oro- orof orok oror orot orro ortc orto otfc oto- otof otok otoo otor otro otto rccc rcfc rctc rffc rftc rkkf rocc rock roco rofc roff rofo rokk roko rokr roof rook roor root rorc rork roro rort rotc rotk roto rotr rott rrfc rrrr rtcc rtfc tccc tcfc tctc tfot tftc tkof tock toco toff tofo toft toko toof took toor toot torc torf tork toro torr tort totc toto totr tott trcc trfc trfr troc troo trot trtc trtr ttfc ttff tttt