-aaa- aaace aaaee aaaoc aabaa aabba aacbc aakko abaab ababa ababe abaca aback abaco abaka abake abako abbac abccc abeba abebe abece abkoo aboab abobo aboke abook acaca acacb acack acake aceae acebo ackee acock acoke acook aeaea aebbe aka-e akaba akabo akaoa akce akobo akoka akoko baabe baake babak babec babee babek babka baboo bacab bacao bacca bacco bacea back- backa backe bakea bakka bakke bakoa bbbee bbook bcock beack beaco bebek becak becca becco becke beeac beebe beeke bekaa bekka bekke bekko bekok bo-bo boaco bobac bobak bobea bobek bobko boboc bobok bocac bocao bocca bocce bocka bocke bocoa boece boeck boeke bokaa bokeo bokko bokok booba booce boock booco booke booko c-a-c ca-ca caaba cabob caboc cabok cacak cacao caco- cacoa caec- caeca caoba ccccc ceace cebec cecka ceco- ceeac ceoce co-bo co-co cobbe cocao cocc- cocce cocco cocea coceo cocka cocke cocoa cokak cokk- cooba cooee cooke ebeko ebook eecca eecke eeeee ekeko k-a-o kaaba kabaa kabab kabak kabba kabob kacee kakae kakao kakka kakke kakko kako- kaooa kebab kebbe kebek kebob kecak kekec ko-ko kobee kocab kocak kocek kocke kokab kokak kokka kokko kooba kooka obaba obake obock ocoee oeco- okabe okaka okeke okobo okoc ooooo