-vac a-ak a-ha a-ok aaaa aaac aaah aaav aaca aacc aach aack aaco aacv aaha aahk aaka aaoo aava acaa acac acca accc acch acco acha achh acho acoa acoh acvv ahac ahah ahha ahoa ahok ahva akaa akah akao akca akha akka akko akok aoah aoca avao avcc avco avva avvo caaa caac caah cac- caca cacc cach cack caco caha caka cava cavo ccaa ccac ccca cccc cccv ccha ccoc ccvo chaa chac chah chak chao chav chca chch chha chka choc choh chok choo chov chvo ckac ckch ckck ckco ckcv ckhv ckoa ckoc ckoo ckvo coak coca coch cock coco coha coho cok- coka coko cooh cook cova covo cvac cvca cvcc haak hack haco haha haho haka hakk hako hava hcca hccc hcch hhaa hhhh hkcc hoac hoca hoch hock hoha hoho hoka hoko hook hova hovk hvac hvcc kaaa kaak kacc kach kaco kacv kaha kahc kaho kaka kakc kakh kakk kako kaoa kaoc kaok kava kavh kavo kavv kcaa kcac kcah kcav kcca kccc kcck kccv kcha kchh kchk kcho kckc kckk kcko kckv kcoh kcvh kcvk kcvo kcvv khac khak khao khav khca khcc khch khck khcv khhk khho khka khkk khkv khoa khoc khok khvh kkaa kkac kkch kkck kkco kkha kkhh kkhk kkkk kkoa kkoh kkoo kkov kkvv koac koak koca koch kock koha kohh koho koka kokc kokh kokk koko kooc kook kooo koov kova kovc kovk kovo kvah kvak kvcc kvch kvck kvco kvcv kvoa kvoc kvoh kvok kvoo kvov kvvv ocac ocak occa occc ocha ohcc ohho ohoh ohok okak okha okka okko okok ooaa ooak ooha ooho oooh oooo ovo- ovoo vaca vach vack vaco vaho vaka vava vhhh voca voho voka vooc vovk vvvv