aaaa aaab aaac aaam aaap aaar aaba aabb aabc aabm aabp aaca aacb aacc aacm aacp aacr aama aamb aamc aamp aamr aapa aapc aapm aara aarc aarm aarp abaa abab abac abam abap abar abb- abba abbb abbr abca abcb abcc abcp abcr abma abmb abmc abpa abpc abpm abpp abpr abra abrc acaa acab acac acap acar acba acca accc accm accp acma acmc acmp acpa acpm acpr acr- acra acrc acrm acrr amaa amac amam amap amar amb- amba ambr amca amcc amm- amma ampa ampc ampm amra amrc apac apam apap apar apba apbr apca apcb apcc apcm apcr apma appa appc appr apra aprc arab arac aram arap arar arba arc- arca arcm arma armc armm arpa arr- arra arrc arrr baaa baam baar baba babb babm babr bac- baca bacc bama bamb bamc bamm bamp bapa bapc bapp bar- bara barb barc barm barr bbbb bbcm bbpr bbrc bcaa bcam bcap bcar bcbc bcbp bcca bccc bccm bcma bcmp bcpp bcra bmaa bpcp bpmc bprc brab brac bram brca brcb brmc brrm brrr caaa caab caac caam caap caba cac- caca cacc cacm cacr cama camb camc camm camp capa capb capc capm capp cara carb carc carm carp carr cbac cbar cbbc cbca cbcc cbcm cbcp cbcr cbpc cbpp cbrm ccaa ccab ccac ccam ccap ccar ccba ccbc ccca cccb cccc cccm cccp ccma ccmb ccmc ccmm ccmp ccpa ccpm ccpp ccpr ccra ccrc ccrp cmaa cmac cmap cmba cmbc cmcc cmmb cmmc cmpa cmpc cmpp cmra cmrr cpaa cpac cpam cpap cpbc cpca cpcm cpma cpmp cppa cppm cprm crab crac cram crap crar crbc crca crcc crcr crmb crmp crpc maaa maac maam maap maar maba mac- maca macb macc macp macr mama mamc mamp mapa mapp mapr mar- mara marc marm marr mbac mbam mbba mbca mcaa mcac mcap mcba mcbc mcca mccc mcmc mcpa mcpb mcpc mcpp mcrc mmaa mmab mmac mmap mmar mmcc mmcm mmmc mmmm mmpa mmpc mmpr mmrc mmrp mpaa mpac mpca mpcc mpmc mppc mppp mprp mr-c mrac mrap mrbb mrbm mrca mrcb mrcc mrcp mrmc mrpa mrrc paap paar paba paca pam- pama pamb pamm pamp papa papb papp papr par- para parc parm parp parr pbac pbar pbcc pbmr pbpa pcaa pcap pcba pcbc pcbm pcca pccc pcmb pcpb pcpm pcpp pcra pcrc pmaa pmac pmbr pmcc pmma pmmp pmpm pmrc ppac ppap ppar ppcc ppcm pppa pppp pprc pprm pram prar prbc prca prcc prcp prmc prrm raab raam raba rabb rac- raca racc rama ramb ramm ramp rapa rapc rapm rapp rara rarb rbbb rbbr rcac rcbc rccb rccc rcmp rmrp rpca rrmc rrmp rrrr