-aaa- aaaoc aabaa aabba aacbc aakko abaab ababa abaca aback abaco abaka abako abava abbac abccc abkoo aboab abobo abook abovo acaca acacb acack acock acook akaba akabo akaoa akobo akoka akoko akova avoca baava babak babka baboo bacab bacao bacca bacco back- backa bakka bakoa bakov bbook bcock bo-bo boaco bobac bobak bobko boboc bobok bobov bocac bocao bocca bocka bocoa bokaa bokko bokok bokov booba boock booco booko c-a-c ca-ca caaba cabob caboc cabok cabov cacak cacao caco- cacoa cakov caoba cavac cavak cavok ccccc co-bo co-co coava cocao cocc- cocco cocka cocoa cokak cokk- cooba k-a-o kaaba kaava kaavo kabaa kabab kabak kabba kabob kacov kakao kakka kakko kako- kaooa kavak kavka ko-ko kocab kocak kocov kokab kokak kokka kokko kooba kooka kovac kovak obaba obava obcov obock ocova okaka okobo okoc ooooo oovoo ovaka ovako ovca ovoca v-bob vacca vacoa vacov vakko vocab vocca vokov