a-ha aaaa aaab aaac aaah aaap aaba aabb aabc aabh aabp aaca aacb aacc aach aacp aaha aapa aapc aaph abaa abab abac abap abb- abba abbb abca abcb abcc abch abcp abha abpa abpc abpp acaa acab acac acap acba acca accc acch accp acha achh achp acpa ahab ahac ahah ahha apac apah apap apba apca apcb apcc aph- apha aphc appa appc apph baaa baah baba babb bac- baca bacc bach baha bapa bapc bapp bbbb bbch bcaa bcap bcbc bcbp bcca bccc bcpp bhca bhcc bpcp bphc caaa caab caac caah caap caba cac- caca cacc cach caha capa capb capc caph capp cbac cbbc cbca cbcc cbcp cbha cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccp ccha cchp ccpa ccpp chaa chab chac chah chap chbp chca chch chcp chha chpa chpp cpaa cpac cpap cpbc cpca cpha cppa haab haba haha hapa happ hcap hcbc hcca hccb hccc hcch hcpc hhaa hhhh hhpa hhpc hpac hpcc paap paba paca pach paha pahp papa papb papp pbac pbcc pbpa pcaa pcap pcba pcbc pcca pccc pcha pchp pcpb pcpp phah phcc phpa ppac ppap ppcc pppa pppp