cccc cccs cchr cchs ccoc ccrc ccrs ccrt ccss ccst cctc cctt chch chcs chhs chks chkt choc choh chok choo chor chos chrc chro chrr chrs chrt chsc chsh chsr chst chto chtr chtt ckch ckck ckco ckcs ckhs ckoc ckoo ckor ckos ckot ckrc cksh ckso ckst ckts coch cock coco coct coho cohs cok- coko cooh cook coos coot cor- corc cork coro corr cors cort cosc cosh coso coss cost cotc coth coto cots cott crcc crcr crhs crkc croc croh crok croo cror crot crrt crss crst crtc crts cscc csch csco cscr cscs cshs csks csor csos csot csrc csrs cssr cstc csto cstr csts cths ctor ctos ctot ctrc ctrs ctsc ctss ctts hccc hcch hccs hchs hcsc hcso hcss hcst hhhh hhhs hkcc hkcs hkst hoch hock hocr hocs hoho hoko hoks hook hoor hoos hoot horc hork horo horr hors hort hosh hoss host hoth hoto hotr hots hott hrhs hros hrrc hrso hscc hsct hshs hsts htcc hths htoh htrk htsc httr k-os kccc kcck kccr kcct kchh kchk kcho kchr kchs kckc kckk kcko kckr kcoh kcor kcos kcot kcrc kcrh kcro kcrr kcrs kcrt kcsc kcsr kcss kcst kctc kcto khcc khch khck khcs khct khhk khho khhs khkk khkr khks khoc khok khor khot khrk khro khrr khrt khss khst khth khtk khto khtr khts khtt kkch kkck kkco kkcr kkcs kkct kkhh kkhk kkhr kkkk kkoh kkoo kkor kkot kkrc kkrh kkrk kkro kkrr kkrs kkrt kksr kkss kkst kktc kktk kkts koch kock kocs koct kohh koho kohr kohs koht kokc kokh kokk koko kokr koks kooc kook kooo koor koos koot korc kork koro korr kors kort kos- kosc kosh koso kosr koss kost kotc koth kotk koto kotr kots kott krcc krch krco krcs krhc krhs krkc krkh krkk krko krkr krks kroc kroh krok kroo kror kros krrc krrk krro krrr krrs krrt krsc krsh krsk krsr krss krst krtc krth krtk krto krtr krts ksch ksck ksco kscr kscs kshk ksho kshr kshs kskk ksko kskr ksks ksoc ksok ksoo ksor ksos ksrh ksro ksrr ksrs ksrt ksso kssr ksss ksst kstc ksth kstk ksto kstr ksts kstt ktcc ktch ktck ktco ktcr ktcs kthc kthh kthk ktho kthr kths ktht ktkc ktkk ktko ktkr ktks ktkt ktoc ktoh ktok ktoo ktor ktot ktrc ktrh ktrk ktro ktrr ktrs ktrt ktsc ktso ktsr ktst kttc ktth kttk ktto kttr ktts kttt occc occt ochs ocht ocks ocos ocro ocrr ocrs oct- octo octs ohcc ohho ohhs ohoh ohok ohos ohso ohss ohto okko okok okor okot okro okso okto oocr ooho oohs oooh oooo ooos oort oost oots orch orco orcs orhs orko oro- orok oror oros orot orro orrs orsk orso ortc orth orto orts oscc osco oshc osho oshs osoo osor osos osro osso ostc ostr osts otho othr oths oto- otoh otok otoo otor otos otro otrs otso otto otts rccc rccs rchs rcos rcsc rcss rctc rcts rhhs rhoc rhoh rhos rkos rkss rkts rocc roch rock roco rocs rohr rohs rokh rokk roko rokr roks rook roor roos root rorc rork roro rort rosc rosh roso ross rost rotc roth rotk roto rotr rots rott rrhs rrrr rscc rsch rscs rshs rsos rsts rtcc rthk rths rtss rtts s-os sccc sccs scct sch- schh scho schr schs sck- scoh scok scoo scor scot scr- scrc scrs scsc scsh scso scsr scst sctc scto sctr scts shcc shhh shhs shok shoo shor shos shot shrs shsc shts skhs skor skot skrt skss soch sock soco socr socs sohh soho sohs sokk soko sook soor soos soot sorh soro sorr sors sort sosh soso soss sost sotc soth sotk soto sots srcc srch srct srhs sros srtr sscc sscs sshs ssoc ssot ssrc ssrs sssc sssh ssss sstc ssth ssts stcc stch stcs sths stks stok stoo stor stos stot strc strk stro strs stss sttc sttr tccc tch- tchh tcho tchr tchs tcos tcsh tctc tcts thch thoo thor thos thot thro thsr thss thtr thts tkos tkts toch tock toco toho toko tooh took toor toos toot torc tork toro torr tors tort tosc tosh tosk toso toss tost totc toth toto totr tots tott trcc trhs troc troo tros trot trst trtc trtr tscc tshs tsks tsos tssr tsst tstc tsts ttss tttt