-aaa- aaaah aaaoc aabaa aabba aacbc aahaa aakko abaab ababa abaca aback abaco abaka abako abbac abccc abcho abkoo aboab abobo aboha abook acaca acacb acack accho achab achak achao achoo ackah acock acook ahhaa ahhha ahoah ahoko akaba akabo akaoa akbah akhba akobo akoka akoko babak babka baboo bacab bacao bacca bacco bacha back- backa bahco bakho bakka bakoa baobh bbook bcock bhook bo-bo bo-ho boaco bobac bobak bobko boboc bobok bocac bocao bocca bocha bochk bocho bocka bocoa bohok bokaa bokko bokok booba booch boock booco booko c-a-c ca-ca caaba cabob caboc cabok cacak cacao cacha caco- cacoa cahch caoba ccccc chaab chaac chaah chaba chaca chach chack chaco chaka chakh chakk chako chhab choak choba choca chock choco chokh choko chook co-bo co-co coach cocao cocc- cocco cocha cocka cocoa cohab cohob cohoo cokak cokk- cooba cooch h-cho ha-ha haack habab habba habbo hacha hack- hahha hakha hakka hback hcooh hhhhh ho-ho ho-oh hobab hobah hobba hocco hokah hooah hooch hooha hooka k-a-o kaaba kabaa kabab kabah kabak kabba kabob kacha kacho kahab kahak kakao kakha kakhk kakka kakko kako- kaooa kbach khaba khakh ko-ko koach kocab kocak kocha kohak kokab kokak kokka kokko kooba kooka obaba obock ochoa oh-oh oh-ok ohaba ohoba ohoka okaka okcho okobo okoc okoho ooooh ooooo