-ous cccc cccs cccu ccoc ccrc ccrs ccss ccuc ccus ckck ckco ckcs ckoc ckoo ckor ckos ckrc ckso cock coco cocu cok- coko cook coos cor- corc cork coro corr cors cosc coso coss couk cour cous crcc crcr crkc croc crok croo cror crss cruk crus cscc csco cscr cscs csks csor csos csrc csrs cssr csur csus cucc cuck cuk- curo curr curs cusk cuso cuss cusu k-os kccc kcck kccr kccu kckc kckk kcko kckr kcor kcos kcou kcrc kcro kcrr kcrs kcru kcsc kcsr kcss kcsu kcuk kkck kkco kkcr kkcs kkkk kkoo kkor kkrc kkrk kkro kkrr kkrs kksr kkss kksu kkus kkuu kock kocs kokc kokk koko kokr koks koku kooc kook kooo koor koos koou korc kork koro korr kors koru kos- kosc koso kosr koss kosu kour kous kouu krcc krco krcs krcu krkc krkk krko krkr krks krku kroc krok kroo kror kros krrc krrk krro krrr krrs krsc krsk krsr krss krsu kruc kruk krur ksck ksco kscr kscs kscu kskk ksko kskr ksks ksku ksoc ksok ksoo ksor ksos ksou ksro ksrr ksrs ksso kssr ksss kssu ksuu kucc kuco kucr kukk kuks kuku kuok kuoo kuos kurk kuro kurr kurs kuru kusc kuso kusu kuuk kuur kuuu occc ocks ocos ocro ocrr ocrs ocur okcu okko okok okor okro okso okur okus oocr ooku oooo ooos oous orco orcs orko oro- orok oror oros orro orrs orsk orso orsu orus oscc osco osku osoo osor osos osro osso ossu oucc our- ouro ours ouu- rccc rccs rcos rcsc rcss rkos rkss rocc rock roco rocs rokk roko rokr roks roku rook roor roos rorc rork roro roru rosc roso ross rouk rous rrrr rscc rscs rsos ruck rukk ruku ruok rurc ruro rurs ruru rusk ruso russ rusu s-os sccc sccs sck- scok scoo scor scr- scrc scrs scsc scso scsr scsu scur skor skss skur sock soco socr socs sokk soko soku sook soor soos soro sorr sors soru soso soss souk sour sous srcc sros sscc sscs ssoc ssrc ssrs sssc ssss suc- succ suck sucr sucs suks suku suor suos sur- surc suro surr surs suru sus- susk suso suss susu suus ucos ucrc ucsc ucsu ukcc ukko ukok ukrc uksc ukur uocc uor- uro- urok uroo urso urss ursu uruk urur urus us-k uscc usco uscs usoc usos ussc ussr usss ussu usus uuoc uuuu