bbbb bbeb bebb bebe bebo beeb beek beem beke beko beme bemu beo- beok beuk bobb bobe bobo bobu boee boeo boke boko boku bomb bome bomu boob booe book boom boue bouk boum bubb bube bubo bubu buem bueu buke bukk buko buku bum- bumb ebbo eboe eboo eeee eeke eemo ekeb ekek embe embo emek emeu emme emmu kbbb kbbe kbbk kbbm kbbo kbbu kbeb kbee kbek kbeo kbkb kbkk kbko kbmb kbme kbmo kbob kboe kbok kboo kbub kbue kbuk kbuu kebb kebe kebu keek keem kekb keke keko keku kemb keme kemm kemo kemu keok keom kkbb kkbe kkbo kkkk kkmk kkmo kkob kkoo kkuu kmem kmeo kmke kmkk kmko kmme kmmk kmmm kmmo kmob kmoe kmok kmom kmou kmue kobb kobe kobk kobo kobu kokb koke kokk koko koku komb kome komo koob kook kooo koou koub koue koum kouu kubb kube kubo kubu kuek kueu kuke kukk kuku kume kumm kumo kumu kuok kuoo kuub kuuk kuuu mbou mebe mebo meek meem meke meko meme memo memu meok meou meum mmmm mobb mobe mobo moke moko mome momo momu moob mooe mook moue mouk mube mubo muee muke muko mume mumm mumo mumu o-eo obbo obkb oboe obok oeme okko okmo okok okom ombe ombo ombu omee omeo omo- omoe omoo omuo oobe ooku oome oooo oume ouu- ubbe ubbo ubek ukek ukeu ukko ukok ukum umb- umbe umbo ummo umoe umok uoke uomo uuuu