-aaa- aaaoc aakko acaca acack acana acock acook akana akaoa akoka akoko akona akono akova anack anaco anaka anana anava ancon ankaa annan anoak anoka anona anono anoon anova anovo avana avanc avcon avoca c-a-c ca-ca caaan caano cacak cacao caco- cacoa cakov canan canao canna canoa canon canoo canva cavac cavak cavan cavok ccccc cnnnn cnova co-co coana coava cocao cocc- cocco cocka cocoa cocon cokak cokk- conan conca conck conco conna cono- conon convo covan k-a-o kaava kaavo kacov kakan kakao kakka kakko kako- kakon kanak kanka kanna kanno kanon kanoo kanva kaona kaooa kavak kavan kavka knack knock knokk ko-ko kocak kocon kocov kokak kokan kokka kokko kokna konak konan konka konna konno kooka koona kovac kovak kovan kovna kovno naaak nacaa nacac naccc nacka nacna nakao nakoo nanak nanan nanao nanka nann- nanna nanno nano- nanoa nanoc nanon nanov nanva naoko navan navon nkana nnooo no-no noank nocan nokko nokon nona- nonac nonan nonka nonna nonno novac novak novo- novoc ocana ocova okaka okano okkan okoc onaka onano onaon onavo onco- onoon ooooo oovoo ovaka ovako ovca ovcon ovoca vaana vacca vacoa vacon vacov vakko vakon vanak vanan vanna vanoc vanov vaona vavan vocca vokov vonck vonko