-ous cccc cccp cccs cccu ccoc ccpp ccpr ccps ccrc ccrp ccrs ccsp ccss ccuc ccup ccus ckck ckco ckcs ckoc ckoo ckor ckos ckpc ckpr ckrc ckso cock coco cocp cocu cok- coko cook coop coos copo copp copr cops cor- corc cork coro corp corr cors cosc coso cosp coss couk coup cour cous cpcs cpcu cpos cpps cprs cpsc cpsk cpso cpsr cpsu cpus crcc crcr crkc crkp croc crok croo crop cror crpc crps crsp crss cruk crup crus cscc csco cscr cscs csks csor csos cspc csps csrc csrs cssr csup csur csus cucc cuck cuk- cupo cupp cupr cups curo curr curs cusk cuso cusp cuss cusu k-os kccc kcck kccr kccu kckc kckk kcko kckr kcor kcos kcou kcpc kcpo kcpr kcps kcpu kcrc kcro kcrp kcrr kcrs kcru kcsc kcsp kcsr kcss kcsu kcuk kcup kkck kkco kkcr kkcs kkkk kkoo kkor kkpc kkpk kkps kkrc kkrk kkro kkrr kkrs kksp kksr kkss kksu kkup kkus kkuu kock kocp kocs kokc kokk koko kokp kokr koks koku kooc kook kooo koop koor koos koou kopp kopr kops kopu korc kork koro korr kors koru kos- kosc koso kosp kosr koss kosu kour kous kouu kpcc kpcr kpcs kpkk kpkr kpoc kpok kpoo kpop kpou kppc kppk kppo kppp kppr kprc kprk kpro kprp kprr kprs kpru kpsc kpso kpsp kpsu kpur kpus krcc krco krcs krcu krkc krkk krko krkr krks krku kroc krok kroo krop kror kros krpr krps krpu krrc krrk krro krrr krrs krsc krsk krsr krss krsu kruc kruk krup krur ksck ksco kscr kscs kscu kskk ksko kskr ksks ksku ksoc ksok ksoo ksop ksor ksos ksou kspc kspk kspo kspr ksps ksro ksrp ksrr ksrs ksso kssr ksss kssu ksup ksuu kucc kuco kucp kucr kukk kuks kuku kuok kuoo kuop kuos kupr kups kupu kurk kuro kurr kurs kuru kusc kuso kusp kusu kuuk kuur kuuu occc ocks ocos ocpp ocro ocrr ocrs ocur okcu okko okok okor okpo okro okso okur okus oocr ooku oooo ooos oops oous opo- opor opos oppo opps opsu opus orco orcs orko oro- orok oror oros orpc orps orro orrs orsk orso orsu orup orus oscc osco osku osoo osor osos osro osso ossu oucc our- ouro ours ouu- pccc pccs pcks pcos pcpp pcps pcrc pcso pkcs pock poco pocs poko poku pook poop poor poos pop- popc popo popp pops porc pork poro porr pors posk poso poss pouk poup pour pous ppcc ppcs ppos pppo pppp ppps pprc ppru ppss ppur prcc prcp prcs pro- proc proo prop pros prou prps prrs prsc prso prss prus pruu psco pscu psoc psos psou pspp pspr psps psrk psrp pssc psso puck puku pups pupu pur- puro purp purr purs puru pusk puss puuc rccc rccs rcos rcpo rcps rcsc rcss rkos rkss rocc rock roco rocs rokk roko rokr roks roku rook roop roor roos ropo rops rorc rork roro roru rosc roso rosp ross rouk roup rous rpcs rpos rpps rrrr rrsp rscc rscs rsos rspk rspo rsps ruck rukk ruku ruok rupp rurc ruro rurp rurs ruru rusk ruso russ rusu s-os sccc sccp sccs sck- scok scoo scop scor scpo scps scr- scrc scrs scsc scso scsr scsu scup scur skop skor skpc skpo skss skup skur sock soco socr socs sokk soko soku sook soop soor soos sopo sopp sops sopu soro sorr sors soru soso soss souk soup sour sous spcc spco spcs spkr spoc spok spoo spop spor spos spps spro sprs spso spsp spss spur spus srcc sros srpc srps srsp sscc sscp sscs ssoc ssop sspc sspo ssps ssrc ssrs sssc ssss suc- succ suck sucr sucs suks suku suor suos sup- supo supp supr sups sur- surc suro surp surr surs suru sus- susk suso susp suss susu suus u-rp uccp ucos ucrc ucsc ucsu ukcc ukko ukok ukps ukrc uksc ukup ukur uocc uor- upcs upor upos uppc uppp uppu upsc upup uro- urok uroo urpo urso urss ursu uruk urup urur urus us-k uscc usco uscs usoc usos uspc uspo uspp usps ussc ussr usss ussu usus uucp uuoc uuuu