-aaa- aabaa aabba aakko abaab ababa abaka abako abana abank abann abano abaon abban abkoo abnak aboab abobo abona abono abook aboon akaba akabo akana akaoa akban akobo akoka akoko akona akono anaba anaka anana anban ankaa annan anoak anoba anoka anona anono anoon babak baban babka baboo bakan bakka bakoa bakon banak banan banba banka banna banon bbook bo-bo boann boano bobak boban bobko bobok bokaa bokko bokok bonab bonan bonao bonka bonon booba booko boonk k-a-o kaaba kabaa kabab kabak kaban kabba kabob kakan kakao kakka kakko kako- kakon kanab kanak kanka kanna kanno kanon kanoo kaona kaooa kbank knokk ko-ko koban kokab kokak kokan kokka kokko kokna konak konan konka konna konno kooba kooka koona naaak naban nabao nabba naboa nabob naboo nakao nakba nakoo nanak nanan nanao nanka nann- nanna nanno nano- nanoa nanon naoko nbaon nkana nnooo no-no noank noboa nobob nokko nokon nona- nonan nonka nonna nonno o-bon obaba okaka okano okkan okobo onaka onano onaon onoba onoon ooooo