a-a a-b a-c aaa aab aac aak aam aap aar ab- aba abb abc abk abm abp abr ac- aca acb acc ack acm acp acr aka akb akc akk akm akp akr ama amb amc amk amm amp amr ap- apa apb apc apk apm app apr ar- ara arb arc ark arm arp arr b-p baa bab bac bak bam bap bar bba bbb bbc bbk bbm bbp bbr bca bcb bcc bck bcm bcp bcr bka bkb bkc bkk bkm bkp bkr bma bmb bmc bmk bmm bmp bmr bpa bpb bpc bpm bpp bpr bra brb brk brm brp brr c-- caa cab cac cak cam cap car cba cbb cbc cbk cbm cbp cbr cca ccb ccc cck ccm ccp ccr cka ckb ckc ckm cma cmb cmc cmk cmm cmp cmr cpa cpb cpc cpk cpm cpp cpr cra crb crc crk crm crp crr ka- kaa kab kac kak kam kap kar kba kbb kbc kbk kbm kbp kbr kca kcb kcc kck kcm kcp kcr kkb kkc kkk kkm kkp kkr kma kmb kmc kmk kmm kmp kpa kpc kpk kpm kpp kpr kra krc krk krp krr m-r maa mab mac mak mam map mar mba mbb mbc mbk mbm mbp mbr mc- mca mcb mcc mck mcm mcp mcr mka mkb mkc mkk mkm mkp mkr mma mmb mmc mmk mmm mmp mmr mpa mpb mpc mpk mpm mpp mpr mra mrb mrc mrk mrm mrp mrr p-p paa pab pac pak pam pap par pba pbb pbc pbk pbm pbp pbr pca pcb pcc pck pcm pcp pcr pka pkb pkc pkm pkp pkr pma pmb pmc pmk pmm pmp pmr ppa ppb ppc ppk ppm ppp ppr pra prb prc prk prm prp prr ra- raa rab rac rak ram rap rar rba rbb rbc rbk rbm rbp rbr rca rcb rcc rcm rcp rcr rkb rkc rkk rkm rkp rma rmb rmc rmm rmp rmr rpa rpb rpc rpk rpm rpp rpr rra rrb rrc rrk rrm rrp rrr

a-ak aaaa aaab aaac aaam aaap aaar aaba aabb aabc aabm aabp aaca aacb aacc aack aacm aacp aacr aaka aama aamb aamc aamp aamr aapa aapc aapm aara aarc aarm aarp abaa abab abac abak 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 akaa akam akap akar akca akka akr- akra amaa amac amam amap amar amb- amba ambr amca amcc amka amm- amma ampa ampc ampk ampm amra amrc apac apak apam apap apar apba apbr apca apcb apcc apcm apcr apma appa appc appr apra aprc arab arac arak aram arap arar arba arc- arca arcm arka arma armc armm arpa arr- arra arrc arrk arrr baaa baak baam baar baba babb babm babr bac- baca bacc back bak- baka bakr bama bamb bamc bamm bamp bapa bapc bapp bar- bara barb barc bark barm barr bbbb bbcm bbpr bbrc bcaa bcam bcap bcar bcbc bcbp bcca bccc bccm bcma bcmp bcpp bcra bkpr bmaa bpcp bpmc bprc brab brac brak bram brca brcb brka brkb brmc brrm brrr caaa caab caac caam caap caba cac- caca cacc cack cacm cacr caka cama camb camc camk camm camp capa capb capc capm capp cara carb carc cark carm carp carr cbac cbar cbbc cbca cbcc cbcm cbcp cbcr cbka cbkm cbkr cbpc cbpp cbrm ccaa ccab ccac ccam ccap ccar ccba ccbc ccca cccb cccc cccm cccp cckm ccma ccmb ccmc ccmm ccmp ccpa ccpm ccpp ccpr ccra ccrc ccrp ckac ckbc ckck ckcm ckmp ckpc ckpr ckrc ckrm cmaa cmac cmap cmba cmbc cmcc cmmb cmmc cmpa cmpc cmpk cmpp cmra cmrr cpaa cpac cpam cpap cpbc cpca cpcm cpma cpmp cppa cppm cprm crab crac cram crap crar crbc crca crcc crcr crkc crkp crmb crmp crpc kaaa kaab kaak kaam kaap kaar kaba kabb kabc kabr kacb kacc kacp kaka kakc kakk kakm kam- kama kamb kamc kamm kamp kamr kap- kapa kapc kapp kara karb kark karm karp karr kbaa kbab kbac kbak kbam kbap kbar kbba kbbb kbbc kbbk kbbm kbbr kbca kbcb kbck kbcr kbkb kbkk kbkr kbmb kbmc kbmp kbmr kbpa kbpc kbpk kbpr kbra kbrb kbrc kbrk kcaa kcab kcac kcam kcap kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kckc kckk kckm kckr kcmb kcmc kcmk kcmm kcmp kcmr kcpa kcpc kcpm kcpr kcrc kcrp kcrr kkaa kkac kkam kkap kkar kkba kkbb kkbr kkcb kkck kkcm kkcr kkkk kkma kkmc kkmk kkmp kkmr kkpc kkpk kkrb kkrc kkrk kkrr kmac kmak kmam kmap kmbc kmbr kmca kmcb kmcc kmcm kmcr kmkk kmmk kmmm kmmr kmpa kmpb kmpc kmpr kmrb kmrc kmrr kpac kpak kpam kpar kpba kpbb kpbm kpbr kpcc kpcr kpkk kpkr kpmb kpmp kpmr kppc kppk kppp kppr kprb kprc kprk kprm kprp kprr krab krac krak kram krap krar krba krbb krbk krbm krbr krca krcb krcc krcm krka krkc krkk krkr krma krmb krmc krmp krmr krpa krpm krpr krrb krrc krrk krrm krrr maaa maac maak maam maap maar maba mac- maca macb macc mack macp macr maka mama mamc mamp mapa mapp mapr mar- mara marc mark marm marr mbac mbam mbba mbca mcaa mcac mcap mcba mcbc mcca mccc mckk mcmc mcpa mcpb mcpc mcpp mcrc mkak 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 mrkr mrmc mrpa mrrc paak paap paar paba paca pack paka pam- pama pamb pamm pamp papa papb papp papr par- para parc park parm parp parr pbac pbar pbcc pbmr pbpa pbpk pcaa pcap pcba pcbc pcbm pcca pccc pcmb pcpb pcpm pcpp pcra pcrc pkmr pmaa pmac pmbr pmcc pmma pmmp