a-ha aaaa aaab aaac aaah aaap aaba aabb aabc aabh aabp aaca aacb aacc aach aacp aacu aaha aapa aapc aaph aaup abaa abab abac abap abau abb- abba abbb abca abcb abcc abch abcp abha abpa abpc abpp abua acaa acab acac acap acba acca accc acch accp accu acha achh achp achu acpa acpu acu- acup ahab ahac ahah ahau ahha ahpu ahua apac apah apap apba apca apcb apcc aph- apha aphc appa appc apph appu apua apuc apup auaa auca auch aucp aupc baaa baah baba babb babu bac- baca bacc bach baha bahu bapa bapc bapp bapu bau- bbau bbbb bbch bcaa bcap bcbc bcbp bcca bccc bcpp bcuc bcup bhca bhcc bhuu bpcp bphc buba bubb bubu buca bucc buch bucu buha bupa bupc caaa caab caac caah caap caba cabu cac- caca cacc cach caha capa capb capc caph capp capu cauc caup cbac cbbc cbca cbcc cbcp cbcu cbha cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccp cccu ccha cchp ccpa ccpp ccuc ccup chaa chab chac chah chap chau chbp chca chch chcp chha chpa chpp chua chub cpaa cpac cpap cpbc cpca cpcu cpha cppa cuau cub- cuba cubb cuca cucc cupp haab haba habu haha hapa happ hapu hau- hcap hcbc hcca hccb hccc hcch hcpc hhaa hhhh hhpa hhpc hpac hpcc huac huah huba hubb huch hucu huhu hupa hupp huub paap paba pabu paca pach pacu paha pahp pahu papa papb papp paua pauh paup pbac pbcc pbpa pcaa pcap pcba pcbc pcca pccc pcha pchp pcpb pcpp phah phcc phpa phua ppac ppap ppcc pppa pppp puah pubu puca puch puha pupa pupu puuc uabc uaca uaua ubac ubba ubpc ucbc ucca uccp ucha ucpa ucpb ucph ucua uhuh uhup upac upca uppa uppc uppp uppu upup uucp uuuu