-ous cccc cccs cccu ccoc ccrc ccrs ccrt ccss ccst cctc cctt ccuc ccus ccut ckck ckco ckcs ckoc ckoo ckor ckos ckot ckrc ckso ckst ckts cock coco coct cocu cok- coko cook coos coot cor- corc cork coro corr cors cort cosc coso coss cost cotc coto cots cott cotu couk cour cous cout crcc crcr crkc croc crok croo cror crot crrt crss crst crtc crts cruk crus crut cscc csco cscr cscs csks csor csos csot csrc csrs cssr cstc csto cstr csts csur csus ctor ctos ctot ctrc ctrs ctsc ctss ctsu ctts cucc cuck cuk- curo curr curs curt cusk cuso cuss cust cusu cut- cutc cuto cuts cutt k-os kccc kcck kccr kcct kccu kckc kckk kcko kckr kcor kcos kcot kcou kcrc kcro kcrr kcrs kcrt kcru kcsc kcsr kcss kcst kcsu kctc kcto kctu kcuk kkck kkco kkcr kkcs kkct kkkk kkoo kkor kkot kkrc kkrk kkro kkrr kkrs kkrt kksr kkss kkst kksu kktc kktk kkts kktu kkus kkut kkuu kock kocs koct kokc kokk koko kokr koks koku kooc kook kooo koor koos koot koou korc kork koro korr kors kort koru kos- kosc koso kosr koss kost kosu kotc kotk koto kotr kots kott kotu kour kous kout kouu krcc krco krcs krcu krkc krkk krko krkr krks krku kroc krok kroo kror kros krrc krrk krro krrr krrs krrt krsc krsk krsr krss krst krsu krtc krtk krto krtr krts kruc kruk krur ksck ksco kscr kscs kscu kskk ksko kskr ksks ksku ksoc ksok ksoo ksor ksos ksou ksro ksrr ksrs ksrt ksso kssr ksss ksst kssu kstc kstk ksto kstr ksts kstt kstu ksut ksuu ktcc ktck ktco ktcr ktcs ktkc ktkk ktko ktkr ktks ktkt ktku ktoc ktok ktoo ktor ktot ktrc ktrk ktro ktrr ktrs ktrt ktru ktsc ktso ktsr ktst ktsu kttc kttk ktto kttr ktts kttt kttu ktuc kucc kuco kucr kukk kuks kuku kuok kuoo kuos kurk kuro kurr kurs kurt kuru kusc kuso kust kusu kuto kutr kuts kutt kutu kuuk kuur kuuu occc occt ocks ocos ocro ocrr ocrs oct- octo octs ocur okcu okko okok okor okot okro okso okto okur okus oocr ooku oooo ooos oort oost oots oous orco orcs orko oro- orok oror oros orot orro orrs orsk orso orsu ortc orto orts orus oscc osco osku osoo osor osos osro osso ossu ostc ostr osts oto- otok otoo otor otos otro otrs otso otsu otto otts ottu otur otus oucc our- ouro ours ourt oust out- outo outs ouu- rccc rccs rcos rcsc rcss rctc rcts rkos rkss rkts rocc rock roco rocs rokk roko rokr roks roku rook roor roos root rorc rork roro rort roru rosc roso ross rost rotc rotk roto rotr rots rott rouk rous rout rrrr rscc rscs rsos rsts rstu rtcc rtss rtts ruck ruct rukk ruku ruok rurc ruro rurs ruru rusk ruso russ rust rusu ruto ruts rutt rutu s-os sccc sccs scct sck- scok scoo scor scot scr- scrc scrs scsc scso scsr scst scsu sctc scto sctr scts scur scut skor skot skrt skss skur skut sock soco socr socs sokk soko soku sook soor soos soot soro sorr sors sort soru soso soss sost sotc sotk soto sots sotu souk sour sous sout srcc srct sros srtr sscc sscs ssoc ssot ssrc ssrs sssc ssss sstc ssts stcc stcs stcu stks stok stoo stor stos stot stou strc strk stro strs stru stss sttc sttr stuc stuk stur stus stut suc- succ suck sucr sucs suks suku suor suos sur- surc suro surr surs surt suru sus- susk suso suss sust susu suto sutu suus tccc tccu tcos tctc tcts tkos tkts tock toco toko toku took toor toos toot torc tork toro torr tors tort toru tosc tosk toso toss tost tosu totc toto totr tots tott touk tour tous tout trcc troc troo tros trot trou trst trtc trtr truc truk trus trut truu tscc tsks tsos tsou tssr tsst tstc tsts ttss tttt tucc tuck tuco tuko tuks tuor tuos turc turk turo turr turs turt turu tusc tusk tuss tust tuto tuts tutt tutu tuuo ucos ucrc ucsc ucst ucsu ucut ukcc ukko ukok ukrc uksc ukur uocc uor- uro- urok uroo urso urss ursu urts uruk urur urus urut us-k uscc usco uscs usoc usos ussc ussr usss usst ussu ustc usto usts usus utor utsc utto uttu uuoc uuuu