cccc cccf cccs ccfc ccff ccnc ccnf ccnr ccns ccoc ccrc ccrf ccrs ccrt ccsf ccsn ccss ccst cctc cctt cfcf cfcn cfco cfcs cffr cfnr cfns cfor cfos cfrn cfrt cftc cftk cftr ckck ckco ckcs ckfr cknc ckns cknt ckoc ckoo ckor ckos ckot ckrc ckso ckst ckts cnco cnrc cnrr cnrt cnss cntc cntf cntk cntr cock coco coct cofc coff cofs coft cok- coko con- conc conf conk conn cono cons cont coof cook coon coos coot cor- corc corf cork corn coro corr cors cort cosc coso coss cost cotc cotn coto cots cott crcc crcr crfc crfs crkc crns croc crok cron croo cror crot crrt crss crst crtc crtf crts cscc cscf csco cscr cscs csfc csfr csks csor csos csot csrc csrs cssr cstc csto cstr csts ctcf ctfc ctfo ctfs ctns ctor ctos ctot ctrc ctrn ctrs ctsc ctsn ctss cttn ctts f--k fccf fcot fcsc fcst fcto ffcc ffff ffrr ffss fftf fnrs fock foco focs fofo fono fons font foof fook foon foos foot for- fork forn foro forr fors fort foso foss fost foto fots fott frcc frcn frfc frns fron fros frot frsc frso frst fscc fsck fsfo fssc fssf ft-c ftfc ftos ftrs ftsr k-os kccc kcck kccr kcct kcfc kcfn kcfo kcft kckc kckf kckk kckn kcko kckr kcno kcnr kcns kcnt kcof kcon kcor kcos kcot kcrc kcrn kcro kcrr kcrs kcrt kcsc kcsf kcsn kcsr kcss kcst kctc kctn kcto kfcf kfco kfcr kfcs kfff kffk kffn kfnc kfnf kfnk kfnn kfno kfns kfok kfon kfoo kfor kfrc kfrn kfro kfrr kfrs kfsk kfsr kfst kftc kftk kftt kkck kkcn kkco kkcr kkcs kkct kkfn kkfr kkfs kkft kkkk kknn kkno kkns kknt kkon kkoo kkor kkot kkrc kkrf kkrk kkrn kkro kkrr kkrs kkrt kksf kksn kksr kkss kkst kktc kktk kkts knck kncn knco kncr knct knfo knfr knft knkk knkt knnk knnr knns knoc knok knon knor knot knrk knro knrs knsc knsk knsn knso knsr knss knst kntk kntn knto kntr knts kocf kock kocn kocs koct kofc koff kofk kofo koft kokc kokf kokk kokn koko kokr koks konc konk kono kont kooc kook koon kooo koor koos koot korc korf kork korn koro korr kors kort kos- kosc kosf koso kosr koss kost kotc kotk kotn koto kotr kots kott krcc krcn krco krcs krfc krff krfn krfo krfs krft krkc krkk krkn krko krkr krks krnk krnn krno krnt kroc krof krok kroo kror kros krrc krrf krrk krrn krro krrr krrs krrt krsc krsf krsk krsn krsr krss krst krtc krtk krtn krto krtr krts ksck kscn ksco kscr kscs ksfc ksfn ksfo ksfr ksft kskf kskk kskn ksko kskr ksks ksnc ksnf ksnk ksnn ksnr ksns ksnt ksoc ksof ksok kson ksoo ksor ksos ksrf ksrn ksro ksrr ksrs ksrt kssn ksso kssr ksss ksst kstc kstk kstn ksto kstr ksts kstt ktcc ktck ktco ktcr ktcs ktfc ktfn ktfo ktfs ktkc ktkk ktkn ktko ktkr ktks ktkt ktnc ktnf ktnk ktnn ktno ktns ktnt ktoc ktok kton ktoo ktor ktot ktrc ktrf ktrk ktrn ktro ktrr ktrs ktrt ktsc ktsf ktsn ktso ktsr ktst kttc kttf kttk kttn ktto kttr ktts kttt nccc nccf nccn nccr nccs ncct ncfc ncnc ncoc ncor ncos ncrc ncsc ncsf ncss ncst nctc nctr nfct nfff nfon nfrs nfsr nftc nfto nkfc nknt nkok nkor nkrf nktr nnnn nnos nnot nnss nntn nock noco nocs noct noko non- nonn nono nons nont noo- nook noon nooo noor noos noot nor- norc norf nork norn noro norr nors nort nos- nosk noss nost not- noto nots nott nrcs nrfc nroc nron nrrc nrsc nrts nscc nscs nsfc nsfk nsfs nskk nsnr nsof nsok nsos nsrc nssc nssf nsso nssr nsss nstc nsts ntcc ntfc ntfs ntof ntrc ntsc ntsf ntss ntto nttr occc occn occt ocks ocon ocos ocro ocrr ocrs oct- octo octs ofcr off- offc offo offr offs ofno ofor ofst okko okno okok okon okor okot okro okso okto onc- oncf onco onct onno onon onor onos onsc onso onst ont- ontc onto oocr ooff oofs oons oont oooo ooos oort oost oots orco orcs orff orfs orko ornc orno orns oro- orof orok oron oror oros orot orro orrs orsk orso ortc orto orts oscc osco osno osnr osoo osor osos osro osso ostc ostr osts otfc oto- otof otok oton otoo otor otos otro otrs otso otto otts rccc rccs rcfc rcnr rcon rcos rcsc rcss rctc rcts rffc rftc rkkf rkos rkss rkts rnco rncs rnnt rnot rocc rock roco rocs rofc roff rofo rokk roko rokr roks ronc ronk rono rons ront roof rook roon roor roos root rorc rork roro rort rosc roso ross rost rotc rotk rotn roto rotr rots rott rrfc rrrr rscc rscn rscs rsfc rsnn rsno rsnr rsos rsts rtcc rtfc rtkn rtns rtss rtts s-os sccc sccs scct scfc sck- scnr scnt scok scon scoo scor scot scr- scrc scrn scrs scsc scsn scso scsr scst sctc sctn scto sctr scts sfcc sfco sfcs sffc sfnt sfor sfos sfrc sfro sfss sfts skfc skn- skon skor skot skrt skss sncc sncf snco snns snoc snoo snor snos snot snrk snrs sntr sock soco socr socs sofo soft sokk sokn soko son- sonk sono sons sont soof sook soon soor soos soot sorn soro sorr sors sort soso soss sost sotc sotk sotn soto sots srcc srct srfc srnn srno sros srtr sscc sscs ssfc ssns ssoc ssot ssrc ssrs sssc sssf ssss sstc ssts stcc stcs stfc stfn stks stnn stnr stns stof stok ston stoo stor stos stot strc strk strn stro strs stsf stss sttc sttr tccc tcfc tcnn tcon tcos tctc tcts tfot tfrs tfss tftc tkof tkon tkos tkts tncc tnfc tnks tnts tock toco toff tofo toft toko tonk tonn tono tons toof took toon toor toos toot torc torf tork torn toro torr tors tort tosc tosk toso toss