cccc cccf ccci cccv ccfc ccff ccfi ccic ccii ccir cciv ccoc ccrc ccrf ccri ccrt cctc cctt cctv ccvi ccvo cfcf cfco cffr cfit cfor cfrt cftc cftk cftr cicc cici cico cicr cict ciff ciii ciit ciko cikr cior circ ciri cirk ciro cirr cirt citf citi cito citt citv civc civo ckck ckco ckcv ckfi ckfr ckoc ckoi ckoo ckor ckot ckrc ckvo cock coco coct cofc coff cofi coft coif coir coit cok- coko coof cook coot cor- corc corf cori cork coro corr cort cotc coti coto cott covo crcc crcr crfc cric crif crik crit crkc croc crok croo cror crot crrt crtc crtf crtv ctcf ctfc ctfo ctic ctor ctot ctrc ctvo ctvt cvcc cvfr cvii cvrr f--k fccf fcic fcii fcot fcto ffcc ffff ffii ffrr fftf ficc fick fico fict fifc fiff fifi fifo fift fiii fiki fior firk fitc fiti fitt foci fock foco fofo foki foof fook foot for- fori fork foro forr fort foti foto fott fr-v frcc frfc fric frik frio frit frot frvt ft-c ftfc ftii iccc iccf icci icco iccr icct icoc icor icrc icrf icrr icrt ictv ifco ific ifit ifor ifrf ifri ifto iiii iiio iiit iioi iioo iirc iitr iitt ikki ikko ikoo ikri ioci iofc ioii ioio ioit ioko ioof iooi iooo iori iotf ioto ircc iri- iric irio irki iroc irov irrc irri irtf irti itic itif itko itof itoi itoo itor itrf itri ittf itto ivcf ivic ivor k-ci kccc kcci kcck kccr kcct kccv kcfc kcfi kcfo kcft kcfv kcic kcif kcii kcir kcit kciv kckc kckf kckk kcko kckr kckv kcof kcor kcot kcrc kcri kcro kcrr kcrt kcrv kctc kcti kcto kctv kcvi kcvk kcvo kcvr kcvv kfcf kfco kfcr kfff kffk kffv kfio kfir kfit kfiv kfok kfoo kfor kfrc kfri kfro kfrr kftc kfti kftk kftt kfvr kicc kick kicr kict kiff kifr kift kiic kiii kiik kiit kikc kikf kiki kikk kiko kikr kikt kioc kioi kiok kioo kiot kirc kirf kiri kirk kiro kirr kirt kirv kitc kiti kito kitr kitt kitv kivi kkci kkck kkco kkcr kkct kkfi kkfr kkft kkic kkik kkit kkkk kkoo kkor kkot kkov kkrc kkrf kkrk kkro kkrr kkrt kkrv kktc kktk kktv kkvr kkvt kkvv kocf koci kock koct kofc koff kofi kofk kofo koft koii koir koit koiv kokc kokf koki kokk koko kokr kooc kooi kook kooo koor koot koov korc korf kori kork koro korr kort korv kotc koti kotk koto kotr kott kotv kovc kovi kovk kovo kovr krcc krci krco krfc krff krfo krft krik krio krit kriv krkc krki krkk krko krkr krkv kroc krof kroi krok kroo kror krov krrc krrf krri krrk krro krrr krrt krtc krti krtk krto krtr krtv krvc krvf krvi krvk krvo krvr krvv ktcc ktck ktco ktcr ktcv ktfc ktfi ktfo ktic ktik ktiv ktkc ktkk ktko ktkr ktkt ktoc ktok ktoo ktor ktot ktrc ktrf ktri ktrk ktro ktrr ktrt ktrv kttc kttf ktti kttk ktto kttr kttt kttv ktvc ktvf ktvi ktvk ktvo ktvr ktvt kvcc kvcf kvci kvck kvco kvcr kvct kvcv kvfc kvic kvik kvir kvit kviv kvoc kvoi kvok kvoo kvor kvot kvov kvrc kvrf kvri kvro kvrr kvrv kvti kvtk kvto kvtr kvtt kvtv kvvf kvvr kvvv occc occi occt ocro ocrr oct- octi octo ofcr off- offc offo offr ofik ofit ofor oici oick oiii oiko oirt oitc oiti okic okir okko okok okor okot okro okto oocr ooff oooo oort orci orco orff orfi ori- oric orif orio orit orko oro- orof orok oror orot orri orro ortc orto orvr otfc otic otif otit oto- otof otok otoo otor otov otro otti otto ovi- ovo- ovoo ovot rccc rcfc rcic rctc rcti rctv rcvr rffc rfic rftc ricc rick rico rict riff rift riif riki rikk riot riri riti rito ritt rivo rkkf rocc rock roco rofc roff rofo roif roik roio roir roit roki rokk roko rokr roof rooi rook roor root rorc rori rork roro rort rotc roti rotk roto rotr rott rovi rovo rrfc rrif rrrr rtcc rtfc rtvi rv-c rvik tccc tcfc tcov tctc tfot tftc ticc tick tico tiff tifo tift tiit tiki tiko tiri tiro tirr titc titi tito titt tivi tivo tkof toci tock toco toff tofi tofo toft toit toki toko toof took toor toot torc torf tori tork toro torr tort torv totc toti toto totr tott tovo trcc trfc trfr tri- tric trif trik trio trit troc troi troo trot trtc trtr ttfc ttff tttt tvri tvro tvrr tvtv vcci vfcc vfor vic- vici vick vico vict viff viii viik viki viko virc viri virk viro virr virt viti vito vitt vivi vivo vkor voff vofr voic voio voir voit vooc voor voot vor- vori voro vort voto vovk vrci vrio vroc vrot vrto vt-i vvvv