a-ha aaaa aaab aaac aaah aaap aaar aaba aabb aabc aabh aabp aaca aacb aacc aach aacp aacr aaha aapa aapc aaph aara aarc aarp abaa abab abac abap abar abb- abba abbb abbr abca abcb abcc abch abcp abcr abha abhr abpa abpc abpp abpr abra abrc acaa acab acac acap acar acba acca accc acch accp acha achh achp achr acpa acpr acr- acra acrc acrr ahab ahac ahah ahar ahha ahra ahrc ahrr apac apah apap apar apba apbr apca apcb apcc apcr aph- apha aphc appa appc apph appr apra aprc arab arac arah arap arar arba arbh arc- arca arch arh- arpa arr- arra arrc arrh arrr baaa baah baar baba babb babr bac- baca bacc bach baha bahr bapa bapc bapp bar- bara barb barc barh barr bbbb bbch bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcpp bcra bhar bhca bhcc bhra bpcp bphc bprc brab brac brah brca brcb brrr caaa caab caac caah caap caba cac- caca cacc cach cacr caha capa capb capc caph capp cara carb carc carp carr cbac cbar cbbc cbca cbcc cbcp cbcr cbha cbpc cbpp cbrh ccaa ccab ccac ccap ccar ccba ccbc ccca cccb cccc cccp ccha cchp cchr ccpa ccpp ccpr ccra ccrc ccrp chaa chab chac chah chap char chbp chca chch chcp chha chpa chpp chpr chra chrb chrc chrp chrr cpaa cpac cpap cpbc cpca cpha cppa crab crac crap crar crbc crca crcc crcr crpc haab haar haba haha hapa happ hara harc harh harp harr hbar hcap hcbc hcca hccb hccc hcch hcpc hcrp hhaa hhhh hhpa hhpc hpac hpcc hrac hrap hrpc hrpp hrrc paap paar paba paca pach paha pahp papa papb papp papr par- para parc parp parr pbac pbar pbcc pbpa pcaa pcap pcba pcbc pcca pccc pcha pchp pcpb pcpp pcra pcrc phah phar phcc phpa phrr ppac ppap ppar ppcc pppa pppp pprc prar prbc prca prcc prcp raab raba rabb rac- raca racc rach raha rahr rapa rapc raph rapp rara rarb rbbb rbbr rcac rcbc rccb rccc rchb rhap rhcp rpca rrah rrrr