a-ak a-ok aaaa aaac aaar aaca aacc aack aaco aacr aacu aaka aaku aaoo aara aarc aaro aaru acaa acac acar acca accc acco accu acoa acor acou acr- acra acrc acro acrr acu- acuo acur akaa akao akar akca akka akko akku akok akr- akra akua aoca aora arac arak arar arau arc- arca arco arka arko aroa aroo aror arr- arra arrc arrk arro arrr arru arua auaa auca aur- aura auro caaa caac cac- caca cacc cack caco cacr caka caor cara carc cark caro carr cauc cauk cauo ccaa ccac ccar ccca cccc cccu ccoc ccra ccrc ccuc ckac ckck ckco ckoa ckoc ckoo ckor ckrc coak coca cock coco cocu cok- coka coko cook cor- cora corc cork coro corr coua couk cour crac crar crau crca crcc crcr crkc croc crok croo cror cruk cuau cuca cucc cuck cuk- cuka cura curo curr kaaa kaak kaar kacc kaco kacu kaka kakc kakk kako kaku kaoa kaoc kaok kaor kara kark karo karr karu kau- kauc kauk kauo kaur kcaa kcac kcar kcau kcca kccc kcck kccr kccu kckc kckk kcko kckr kcor kcou kcrc kcro kcrr kcru kcua kcuk kkaa kkac kkar kkck kkco kkcr kkkk kkoa kkoo kkor kkrc kkrk kkro kkrr kkua kkuu koac koak koar koca kock koka kokc kokk koko kokr koku kooc kook kooo koor koou kora korc kork koro korr koru koua kour kouu krac krak krar krca krcc krco krcu krka krkc krkk krko krkr krku kroa kroc krok kroo kror krrc krrk krro krrr krua kruc kruk krur kuac kuar kuau kuca kucc kuco kucr kuka kukk kuku kuoa kuok kuoo kura kurk kuro kurr kuru kuuk kuur kuuu oaau oara ocac ocak occa occc ocra ocro ocrr ocur okak okcu okka okko okok okor okra okro okur ooaa ooak oocr ooku oooo oora orac orak orao orar orca orco orka orko oro- orok oror orra orro ouac oucc our- oura ouro ouu- raak rac- raca racc rack raco racu raka rakk raku raoc raok rara rark raro raua rauc rauk rcac rccc roak roar roca rocc rock roco roka rokk roko rokr roku rook roor rora rorc rork roro roru roua rouk rrrr ruca ruck ruka rukk ruku ruok rura rurc ruro ruru uaca uaoc uarc uaru uaua ucak ucar ucca ucka ucrc ucua ukcc ukko ukok ukra ukrc ukur uocc uor- urac urao urau urca urka uro- uroa urok uroo urra uruk urur uuoc uuuu