-vac a-ak a-ok aaaa aaac aaar aaas aaav aaca aacc aack aaco aacr aacs aacv aaka aaoo aara aarc aaro aars aasa aasc aass aava acaa acac acar acas acca accc acco accs acks acoa acor acos acr- acra acrc acro acrr acrs acrv acsa acsc acss acvs acvv akaa akao akar akas akca akka akko akok akos akr- akra aksa aoca aocs aoks aora aors aoss arac arak arar aras arc- arca arco arcs arka arko arks aroa aroo aror aros arr- arra arrc arrk arro arrr arrs ars- arsa arsc arsk arso arva arvo asaa asac asak asao asar asas asc- asca ascc asco ascr aska asko askr asks asoc asok asor asos asra asrc asro asrs assa assc assk asso assr asss asva asvs avao avar avas avcc avco avor avos avra avro avva avvo caaa caac caas cac- caca cacc cack caco cacr caka caor caos cara carc cark caro carr cars casa casc cask caso casr cass cava cavo cavs ccaa ccac ccar ccas ccca cccc cccs cccv ccoc ccra ccrc ccrs ccsa ccss ccvo ccvs ckac ckck ckco ckcs ckcv ckoa ckoc ckoo ckor ckos ckrc cksa ckso ckvo coak coas coca cock coco cok- coka coko cook coos cor- cora corc cork coro corr cors cosa cosc coso coss cova covo crac crar cras crca crcc crcr crkc croc crok croo cror crsa crss csaa csac csak csao csar csas csav cscc csco cscr cscs cska csks csor csos csra csrc csrs cssa cssr cvac cvar cvas cvca cvcc cvra cvrr cvss k-os kaaa kaak kaar kaas kacc kaco kacs kacv kaka kakc kakk kako kaks kaoa kaoc kaok kaor kaos kara kark karo karr kars karv kas- kasa kasc kask kaso kasr kass kava kavo kavs kavv kcaa kcac kcar kcas kcav kcca kccc kcck kccr kccv kckc kckk kcko kckr kckv kcor kcos kcrc kcro kcrr kcrs kcrv kcsa kcsc kcsr kcss kcvk kcvo kcvr kcvs kcvv kkaa kkac kkar kkck kkco kkcr kkcs kkkk kkoa kkoo kkor kkov kkrc kkrk kkro kkrr kkrs kkrv kksa kksr kkss kkvr kkvv koac koak koar koas koca kock kocs koka kokc kokk koko kokr koks kooc kook kooo koor koos koov kora korc kork koro korr kors korv kos- kosa kosc koso kosr koss kova kovc kovk kovo kovr krac krak krar kras krav krca krcc krco krcs krka krkc krkk krko krkr krks krkv kroa kroc krok kroo kror kros krov krrc krrk krro krrr krrs krsa krsc krsk krsr krss krsv krva krvc krvk krvo krvr krvs krvv ksac ksak ksar ksas ksav ksca ksck ksco kscr kscs kscv kska kskk ksko kskr ksks ksoc ksok ksoo ksor ksos ksra ksro ksrr ksrs ksrv kssa ksso kssr ksss ksva ksvc ksvr kvak kvar kvas kvcc kvck kvco kvcr kvcs kvcv kvoa kvoc kvok kvoo kvor kvov kvra kvrc kvro kvrr kvrv kvsa kvsc kvso kvsr kvss kvsv kvvr kvvs kvvv oaks oara oars oasc oass oavs ocac ocak ocas occa occc ocks ocos ocra ocro ocrr ocrs ocsa okak okas okka okko okok okor okra okro oksa okso ooaa ooak oocr oooo ooos oora oosa orac orak orao orar oras orav orca orco orcs orka orko oro- orok oror oros orra orro orrs orsa orsk orso orvr orvs osak osar osas osca oscc osco osoo osor osos osov osro ossa osso ovar ovcs ovo- ovoo ovra raak raas rac- raca racc rack raco racs racv raka rakk raoc raok raos rara rark raro rars rasa rasc rask raso rass rava rcac rcas rccc rccs rcos rcsa rcsc rcss rcvr rcvs rkos rkss rksv roak roar roas roca rocc rock roco rocs roka rokk roko rokr roks rook roor roos rora rorc rork roro rosa rosc roso ross rova rovo rovs rras rrrr rsaa rscc rscs rsos rssa rv-c rvca s-os sa-c saac saak saar saas saca sacc sack saco sacr sacs saka sakk sako saks saor saos sara sarc sark saro sarr sars sarv sasa sasc sask saso sass sava savo savs scaa scac scak scar scas sccc sccs sck- scok scoo scor scr- scra scrc scrs scsa scsc scso scsr skac skar skor skov skra skss soak soar soas soca sock soco socr socs soka sokk soko sook soor soos sora soro sorr sors sosa soso soss sosv sova sovo sovs sras srcc sros ssaa ssac ssao ssas ssca sscc sscs ssoc ssra ssrc ssrs sssa sssc ssss svar svcc svcs svor svsc vaar vaas vaca vack vaco vacs vaka vara vark varr vars vas- vasa vaso vass vava vavs vcrs vkor voar voca voka voks vooc voor vor- vora voro vors vosa voso voss vovk vrac vrak vras vrav vroc vrsa vssc vvvv