a-ha aaaa aaab aaac aaah aaba aabb aabc aabh aaca aacb aacc aach aacu aaha abaa abab abac abau abax abb- abba abbb abca abcb abcc abch abha abua acaa acab acac acba acca accc acch accu acha achh achu acu- ahab ahac ahah ahau ahha ahua auaa auca auch auhx auxa ba-x baaa baah baba babb babu bac- baca bacc bach baha bahu bau- baux bbau bbbb bbch bcaa bcbc bcca bccc bcuc bhca bhcc bhuu buba bubb bubu buca bucc buch bucu buha buxa caaa caab caac caah caba cabu cac- caca cacc cach caha cauc caux caxa cbac cbax cbbc cbca cbcc cbcu cbha cbux cbxa ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccha ccuc chaa chab chac chah chau chax chca chch chha chua chub cuau cub- cuba cubb cuca cucc cxxx haab haba habu haha hau- hcbc hcca hccb hccc hcch hhaa hhhh huac huah huba hubb huch hucu huhu huub uabc uaca uaua ubac ubba ucbc ucca ucha ucua uhuh uuuu xuxa xuxu xxxx