-aaa- aabaa aabba aabra aakko abaab ababa abaka abako abara abbar abkar abkoo aboab abobo abook abora abrak abrar akaba akabo akaoa akbar akkra akobo akoka akoko akrak akrar akro- ar-ab arab- araba arabo arara arbab arbar arbok arbor arkar aroab aroar aroba aroor arora arrak b-r-k babak babar babka baboo babra bakar bakka bakoa bakra baoro baraa barab barak barao barar barba bark- barka baro- baroa baroo baror barra barro bbook bo-bo boaro bobak bobar bobko bobok bobr bokaa bokko bokok bokor booba booko boora borak borba borbo borka borko boro- boroa borok boroo borra borro braak brako broak brobo brook brora brrar brrrr k-a-o k-rab k-rob kaaba kabaa kabab kabak kabar kabba kabob kabro kakao kakar kakka kakko kako- kakra kaooa karak karka karob karok karoo ko-ko koara kobar kobra kokab kokak kokka kokko kokor kokra kooba kooka korab korak korba korbo koroa koror korra korro kraak kraar kraka o-r-b oaror obaba obara obora oboro obrab obrok okaka okara okobo okoro ooooo oraba orara orobo ra-ra raaba raaor rabab rabak rabba rabor rakaa rakab ro-ro roark robab robak robar robbo robo- robor rokkk rooba rorra