-vac a-ak a-ok aaaa aaac aaav aaca aacc aack aaco aacu aacv aaka aaku aaoo aava acaa acac acca accc acco accu acoa acou acu- acuo acvv akaa akao akca akka akko akku akok akua aoca auaa auca avao avcc avco avou avva avvo caaa caac cac- caca cacc cack caco caka cauc cauk cauo cava cavo cavu ccaa ccac ccca cccc cccu cccv ccoc ccuc ccvo ckac ckck ckco ckcv ckoa ckoc ckoo ckvo coak coca cock coco cocu cok- coka coko cook coua couk cova covo cuau cuca cucc cuck cuk- cuka cvac cvca cvcc kaaa kaak kacc kaco kacu kacv kaka kakc kakk kako kaku kaoa kaoc kaok kau- kauc kauk kauo kava kavo kavu kavv kcaa kcac kcau kcav kcca kccc kcck kccu kccv kckc kckk kcko kckv kcou kcua kcuk kcvk kcvo kcvu kcvv kkaa kkac kkck kkco kkkk kkoa kkoo kkov kkua kkuu kkvu kkvv koac koak koca kock koka kokc kokk koko koku kooc kook kooo koou koov koua kouu kova kovc kovk kovo kuac kuau kuca kucc kuco kucv kuka kukk kuku kuoa kuok kuoo kuuk kuuu kuva kuvo kvak kvcc kvck kvco kvcu kvcv kvoa kvoc kvok kvoo kvou kvov kvuu kvvv oaau ocac ocak occa occc okak okcu okka okko okok ooaa ooak ooku oooo ouac oucc ouu- ovo- ovoo uaca uaoc uaua ucak ucav ucca ucka ucua ukcc ukko ukok uocc uovo uuoc uuuu uv-a uv-c uvaa uvac uvok uvvu vaca vack vaco vaka vava voca voka vooc vouk vovk vuca vuco vuka vuku vvvv